| 一つ | ひとつ | one; for one thing; only; (not) even | n5 |
| 一覧 | いちらん | look; glance; sight; having a look at | n1 |
| 一 | いち | one; 1; best; first | n5 |
| 一部 | いちぶ | one part; one portion; one section; one copy (of a book) | n4 |
| 一方 | いっぽう | one (esp. of two); the other; one way; the other way | n4 |
| 二つ | ふたつ | two | n5 |
| 一番 | いちばん | number one; first; first place; best | n5 |
| 一般 | いっぱん | general; universal; ordinary; average | n3 |
| 一般的 | いっぱんてき | general; popular; common; typical | n3 |
| 一度 | いちど | once; one time; on one occasion; temporarily | n5 |
| 一種 | いっしゅ | a kind; a sort; a variety; a species | n2 |
| 二 | に | two; 2 | n5 |
| 一緒 | いっしょ | (doing) together; one lump; one mixture; the same category | n5 |
| 一体 | いったい | (what) the heck; (why) in the world; (who) on earth; (where) the hell | n2 |
| 一時 | ひととき | a (short) time; a while; moment; one time (in the past) | n3 |
| 一切 | いっさい | all; everything; entirety; the whole | n2 |
| 一言 | ひとこと | single word; a few words; brief comment | n2 |
| 一生 | いっしょう | whole life; a lifetime; all through life; (the only, the greatest, etc.) of one's life | n4 |
| 一層 | いっそう | even more; still more; all the more; more than ever | n2 |
| 一致 | いっち | agreement; accord; correspondence; consistency | n2 |
| もう一度 | もういちど | once more; again | |
| 唯一 | ゆいいつ | only; sole; unique | n2 |
| 一人 | ひとり | one person; being alone; being by oneself; being single | n5 |
| 一定 | いってい | to fix; to settle; to standardize; to regularize | n2 |
| 一緒に | いっしょに | together (with); at the same time; in one lump; in the same category | |
| 一応 | いちおう | more or less; though not quite satisfactorily; after a fashion; pretty much | n3 |
| 一月 | いちがつ | January; first month of the lunar calendar | n5 |
| 一家 | いっか | a family; a household; a home; one's family | n1 |
| 二月 | にがつ | February; second month of the lunar calendar | n5 |
| 一々 | いちいち | one-by-one; separately; every single; each and every | n2 |
| 統一 | とういつ | unity; consolidation; uniformity; unification | n2 |
| 一同 | いちどう | all present; all concerned; all of us | |
| 一生懸命 | いっしょうけんめい | very hard; with utmost effort; as hard as one can; with all one's might | n3 |
| 一向 | いっこう | completely; absolutely; totally; (not) at all | |
| 一夜 | いちや | one night; all night; overnight; one evening | |
| 一見 | いっけん | look; glimpse; glance; apparently | n2 |
| 二人 | ふたり | two persons; two people; pair; couple | n5 |
| 十二月 | じゅうにがつ | December; twelfth month of the lunar calendar | n5 |
| 一例 | いちれい | example; an instance | n1 |
| 十一月 | じゅういちがつ | November; eleventh month of the lunar calendar | n5 |
| 一行 | いちぎょう | (one) line; (one) row | |
| 一目 | ひとめ | glance; look; glimpse; complete view | n1 |
| 万一 | まんいち | (unlikely event of) emergency; the worst(-case scenario); 10000 to 1; (if) by some chance | |
| 一旦 | いったん | once; for a short time; briefly; temporarily | n2 |
| 一刻 | いっこく | a moment; a minute; an instant; stubborn | n1 |
| 一瞬 | いっしゅん | instant; moment; for an instant | n2 |
| 一杯 | いっぱい | one cup (of); one glass (of); one bowl (of); cupful | n5 |
| 同一 | どういつ | identical; same; one and the same; equal | n2 |
| 二度と | にどと | never again | n2 |
| 一般に | いっぱんに | generally; in general; widely; commonly | |
| 一段 | いちだん | even more; still more; much more; further | n3 |
| 一室 | いっしつ | one room | |
| 一流 | いちりゅう | first-class; first-rate; top-flight; top-ranking | n3 |
| 一足 | いっそく | a pair (of shoes or socks) | |
| 一度に | いちどに | all at once | n3 |
| 一気に | いっきに | in one go; in one gulp; in one breath; without stopping | n2 |
| 一文 | いちもん | tiny amount of money; a penny; a cent; a farthing | |
| 一座 | いちざ | the whole company; the party; all those present; everyone in attendance | |
| 一寸 | いっすん | one sun (approx. 3 cm); little bit (of time, distance, etc.) | |
| 一帯 | いったい | whole area; whole region; stretch (of land); tract | n2 |
| 一間 | いっけん | one ken (approx. 1.8 m) | n2 |
| 一向に | いっこうに | completely; absolutely; totally; (not) at all | |
| 一筋 | ひとすじ | one line; one stretch (e.g. of road); one strand (e.g. of hair); one beam (e.g. of light) | n1 |
| 一片 | いっぺん | a piece; a scrap; a fragment; a bit | n1 |
| 一貫 | いっかん | consistency; coherence; integration; one kan (approx. 3.75 kg) | n1 |
| 一様 | いちよう | uniform; equal; even; the same | n3 |
| 一日 | いちにち | one day; all day (long); the whole day; from morning till night | n5 |
| 一団 | いちだん | body; group; party; gang | n3 |
| 一斉 | いっせい | simultaneous; all at once | |
| 一節 | いっせつ | one passage; one paragraph; one stanza; one verse | |
| 何一つ | なにひとつ | (not) one | |
| 一隅 | いちぐう | corner; nook | |
| 一族 | いちぞく | family; relatives; dependents; household | n1 |
| 一息 | ひといき | one breath; time of one breath; pause; break | n1 |
| 一大 | いちだい | one large ...; a great ... | |
| 一等 | いっとう | first class; first rank; first grade; first place | |
| 一部分 | いちぶぶん | one part; one portion; one section | n3 |
| 一端 | いったん | one end; an end; part; fragment | n1 |
| 一昨日 | おととい | day before yesterday | n3 |
| 一角 | いっかく | corner; section; point; part | n2 |
| 第一 | だいいち | first; foremost; number one; most important | n4 |
| 一変 | いっぺん | complete change; about-face | n2 |
| 一口 | ひとくち | mouthful; morsel; bite; gulp | n2 |
| 一句 | いっく | phrase (verse, line); one haiku-poem | n2 |
| 一事 | いちじ | one thing | n3 |
| 第二 | だいに | second | |
| 一身 | いっしん | oneself; one's body | n1 |
| 日本一 | にほんいち | Japan's best; number one in Japan | |
| 一昨年 | おととし | year before last | n2 |
| 第一歩 | だいいっぽ | first step | n2 |
| 一声 | いっせい | voice; cry; shout | |
| 一心 | いっしん | one mind; wholeheartedness; one's whole heart | n1 |
| 一所 | いっしょ | one place; the same place; one person; together | n5 |
| 一ぱい | いっぱい | one cup (of); one glass (of); one bowl (of); cupful | n5 |
| 一時的 | いちじてき | temporary; transitory; short-lived | n2 |
| 一味 | いちみ | clan; partisans; conspirators; gang | |
| 一群 | いちぐん | group; flock; crowd; herd | |
| 一途 | いちず | single-minded; intent; determined; wholehearted | n1 |
| 一心に | いっしんに | wholeheartedly; single-mindedly; fervently; intently | |
| 二次 | にじ | second; secondary; quadratic (function, equation, etc.); second-order | n2 |
| 一次 | いちじ | first; preliminary; primary (sources, industry, etc.); original | n1 |
| 一語 | いちご | one word | n5 |
| 一代 | いちだい | generation; lifetime; age | |
| 一服 | いっぷく | a puff; a smoke; a cup of tea; (short) rest | |
| 一条 | いちじょう | one line; one streak; one stripe; one ray (of light) | |
| 二字 | にじ | two characters; name | n2 |
| 一本 | いっぽん | one long cylindrical thing; one film, TV show, etc.; one goal, home run, etc.; one telephone call | |
| 一歩 | いっぽ | (a) step; one step; level; stage | n2 |
| 一挙 | いっきょ | one effort; one action | |
| 一直線 | いっちょくせん | straight line | n1 |
| 一滴 | いってき | one drop (of fluid) | |
| 一念 | いちねん | determined purpose; an incredibly short span of time (i.e. the time occupied by a single thought); a single repetition of a prayer (esp. in Jodo-shu) | |
| 二重 | にじゅう | double; two-fold; two layers; duplex | n5 |
| 一派 | いっぱ | one school; one sect; one denomination; one party | |
| 一撃 | いちげき | one blow; one hit; one stroke; summiting on the first attempt (oft. without prior knowledge about the route; in climbing) | |
| 一瞥 | いちべつ | a glance; a look; a glimpse | |
| 一連 | いちれん | series; chain; sequence; two reams (i.e. 1000 sheets of paper) | n1 |
| 精一杯 | せいいっぱい | the best one can do; one's best effort; with all one's might; to the best of one's ability | n2 |
| 一品 | いっぴん | item; article; dish; course | |
| 今一つ | いまひとつ | one more; another (one); (not) quite; (not) entirely | n2 |
| 序二段 | じょにだん | jonidan; second lowest division | |
| 一員 | いちいん | one person; one member | n4 |
| 一概に | いちがいに | unconditionally; as a rule | n1 |
| 一遍 | いっぺん | once; one time; exclusively; only | n2 |
| 一転 | いってん | one turn; spinning around; complete change; reversal | n2 |
| 一括 | いっかつ | lumping together; summing up; bundle; lump | n2 |
| 一枚 | いちまい | one (thin, flat object); one sheet | |
| 一刀 | いっとう | sword; blade; single stroke | |
| 一眼 | いちがん | one eye; single-lens (reflex camera); one eye (in a group of stones) | n1 |
| 一門 | いちもん | family; clan; kin; sect | |
| 一線 | いっせん | one line; (a) single line; boundary; line (between things) | n1 |
| 一疋 | いっぴき | one (small animal); two-tan bolt of cloth | |
| 一面 | いちめん | one face; one surface; the whole surface; one aspect | n2 |
| 一色 | いっしょく | one color; one kind; one tendency; being the sole mood, sentiment, focus of attention, etc. | |
| 一年 | いちねん | one year; some time ago | |
| 一周 | いっしゅう | one round; one circuit; one revolution; one lap | n1 |
| 無二 | むに | peerless; matchless; unparalleled; unrivalled | |
| 万が一 | まんがいち | (if) by some chance; by some possibility; in the unlikely event that; 10000 to 1 | n1 |
| 人一倍 | ひといちばい | (much) more than others; exceedingly; extremely; unusually | n1 |
| 二郎 | じろう | second son | |
| 一朝 | いっちょう | temporarily; short period; once; one morning | |
| 一礼 | いちれい | one bow; one salute; one greeting | n1 |
| 一点張り | いってんばり | persistence; single-mindedness; sticking to one point; focusing on one thing | |
| 一躍 | いちやく | suddenly (rising to fame, etc.); instantly; immediately; overnight | |
| 一場 | いちじょう | one time (place) | |
| 二言 | にごん | double-dealing; double tongue; going back on what one has said; repeating oneself | |
| 随一 | ずいいち | best; greatest; first | n1 |
| 千載一遇 | せんざいいちぐう | once-in-a-lifetime (opportunity); golden (opportunity); one-in-a-million (chance) | |
| 一回 | いっかい | once; one time; one round; one game | |
| 一人娘 | ひとりむすめ | only daughter | |
| 一文字 | いちもんじ | straight line; beeline | |
| 一読 | いちどく | perusal; one reading; reading through (once) | n1 |
| 世界一 | せかいいち | best in the world | |
| 単一 | たんいつ | single; simple; sole; individual | n1 |
| 二分 | にぶん | halving; dividing (into two parts); bisection; the two equinoxes (vernal and autumnal) | |
| 一段落 | いちだんらく | reaching a stopping place; settling down (before the next stage); getting to a point where one can rest; completing the first stage (of the work) | n2 |
| 一目散 | いちもくさん | running at full speed; going as fast as one can go | |
| 一泊 | いっぱく | (staying) one night; overnight stay; overnight rental; per-night rental | n3 |
| 一笑 | いっしょう | laugh; smile | n4 |
| 一大事 | いちだいじ | important matter; matter of great importance; serious affair; major incident | |
| 一環 | いっかん | link (e.g. in a chain of events); part (of a plan, campaign, activities, etc.); monocyclic | n1 |
| 一朝一夕 | いっちょういっせき | in a day; in a brief space of time | |
| 一望 | いちぼう | one sweep (of the eye); sweeping view; unbroken view | |
| 二段 | にだん | double; two-stage; second dan (in martial arts, go, shogi, etc.); nidan (verb, verb inflection) | |
| 一物 | いちもつ | one thing; one article; ulterior motive; secret intention | |
| 一銭 | いっせん | one sen; one-hundredth of a yen; small amount of money | n1 |
| 第二次 | だいにじ | the second ... | |
| 一脈 | いちみゃく | (a) vein; (a) thread (of connection) | |
| 一先ず | ひとまず | for now; for the time being; for the present; though not quite satisfactorily | n1 |
| 一喝 | いっかつ | sharp, loud rebuke; bark; roar; rebuke used in Zen to achieve enlightenment | n2 |
| 一命 | いちめい | one life; one's life; one order; one command | |
| 均一 | きんいつ | uniformity; equality | n1 |
| 一抹 | いちまつ | a touch (of sadness, unease, etc.); a tinge (of); a hint (of); a wreath (of smoke, cloud, etc.) | n2 |
| 一世 | いっせい | generation; lifetime; the age; the day | |
| 一項 | いっこう | an item | |
| 一掃 | いっそう | clean sweep; purging; doing away with; eradication | n1 |
| 危機一髪 | ききいっぱつ | by a hair's breadth; in the nick of time; touch and go; close call | |
| 一統 | いっとう | lineage; line; unification; all (of you) | |
| 一説 | いっせつ | one theory; one opinion; another theory | |
| 一葉 | いちよう | one leaf; one page; one sheet; one card | n3 |
| 一しきり | ひとしきり | for a while; for some time; for a period | |
| 力一杯 | ちからいっぱい | with all one's strength; with might and main; as hard as one can | |
| 一すじ | ひとすじ | one line; one stretch (e.g. of road); one strand (e.g. of hair); one beam (e.g. of light) | n1 |
| 一軒家 | いっけんや | detached house; single house; single building; isolated house | n1 |
| 二酸化炭素 | にさんかたんそ | carbon dioxide; CO2 | n2 |
| 一戸建て | いっこだて | detached house; stand-alone house; single-family home | |
| 一つ一つ | ひとつひとつ | one-by-one; separately; in detail | |
| 一般人 | いっぱんじん | ordinary person; member of the general public; non-celebrity | |
| 一幕 | ひとまく | one act (of a play); scene; event | |
| 第一義 | だいいちぎ | primary significance; primary importance; first principle; absolute truth | |
| 一徹 | いってつ | obstinate; stubborn; inflexible | |
| 一手 | いって | one move (in go, shogi, etc.); only way; only means; doing alone | |
| 一週 | いっしゅう | one week | n1 |
| 二の腕 | にのうで | upper arm; lower arm | |
| 一新 | いっしん | complete change; reform; restoration; remodeling | n1 |
| 一対 | いっつい | pair; couple | |
| 一体全体 | いったいぜんたい | ... the heck (e.g. "what the heck?"); ... in the world (e.g. "why in the world?"); ... on earth (e.g. "who on earth?") | n1 |
| 一風 | いっぷう | oddity; eccentricity; peculiarity | |
| 一戸 | いっこ | one house; household | |
| 一式 | いっしき | (complete) set; outfit; kit; suite | |
| 一覧表 | いちらんひょう | list; table; schedule; catalogue | |
| 一路 | いちろ | straight; directly; voyage; journey | |
| 一睡 | いっすい | wink of sleep; snooze; doze; nap | |
| 一元論 | いちげんろん | monism | |
| 春一番 | はるいちばん | first storm of spring; strong winds during the change from winter to spring | |
| 一律 | いちりつ | uniform; even; across-the-board; equal | n1 |
| 一冊 | いっさつ | one copy (of a book, magazine, etc.); one volume | |
| 二十四節気 | にじゅうしせっき | 24 solar stems (terms used to denote the changing of the seasons); 24 divisions of the Chinese solar year | |
| 二男 | じなん | second son | |
| 一道 | いちどう | one road; ray (of hope) | |
| 一夕 | いっせき | one evening; some evenings | |
| 一所懸命 | いっしょけんめい | very hard; with utmost effort; as hard as one can; with all one's might | |
| 一太郎 | いちたろう | Ichitarō; Ichitaro (word processing package) | |
| 一人暮らし | ひとりぐらし | living by oneself; living alone | n3 |
| 一宿一飯 | いっしゅくいっぱん | (being beholden to someone for a favor of) a night's lodging and a meal | |
| 一筆 | いっぴつ | one stroke (of a brush); a few lines (of writing); note; short letter | |
| 一休み | ひとやすみ | (short) rest; breather; break | |
| 一年中 | いちねんじゅう | all year round | |
| 二三 | にさん | two or three | |
| 一介 | いっかい | a mere ...; only a ...; insignificant | |
| 一発 | いっぱつ | one shot; one charge; one explosion; one blow | |
| 一任 | いちにん | entrusting (everything to); leaving (a matter) entirely with | n1 |
| 十二支 | じゅうにし | 12 signs of the Chinese zodiac | n1 |
| 一人ひとり | ひとりひとり | each (person); individually; one by one; one at a time | n3 |
| 一天 | いってん | the whole sky; firmament | n2 |
| 一揆 | いっき | uprising (esp. in Japan since middle ages, e.g. peasant uprising); revolt; insurrection; putsch | |
| 二階 | にかい | second floor; upstairs | |
| 一半 | いっぱん | half; part | n3 |
| 第一人者 | だいいちにんしゃ | leading person; foremost figure | n1 |
| 一存 | いちぞん | one's own discretion (idea, responsibility) | n1 |
| 一巡 | いちじゅん | one round; one tour; one circuit; one patrol | |
| 一縷 | いちる | slightest connection; slender connection; sliver (e.g. of hope); one thread | |
| 一に | いつに | solely; entirely; only; or | |
| 一際 | ひときわ | conspicuously; noticeably; remarkably; strikingly | |
| 一心不乱 | いっしんふらん | wholeheartedly; with heart and soul; intently; with undivided attention | |
| 一反 | いったん | one-tenth hectare | n2 |
| 一因 | いちいん | one cause; one reason; one factor | n2 |
| 一部始終 | いちぶしじゅう | full particulars; all the details; the whole story; everything (about) | |
| 一点 | いってん | point; dot; speck; one point | n2 |
| 生一本 | きいっぽん | straight-forwardness; honesty; purity | |
| 逐一 | ちくいち | one by one; in detail; minutely | |
| 純一 | じゅんいつ | purity; homogeneity; unadorned | |
| 羽二重 | はぶたえ | habutai; habutae; fine Japanese silk | |
| 一挙一動 | いっきょいちどう | one's every action; every single move | |
| 一策 | いっさく | idea; plan | |
| 一時期 | いちじき | a period (of time) | |
| 一山 | ひとやま | one mountain; pile (of something); heap; lot (in sale) | |
| もう一つ | もうひとつ | another; one more; even more; (not) quite | |
| 身一つ | みひとつ | one's body alone; having nothing except one's body; just oneself (with no belongings) | |
| 一堂 | いちどう | one building (hall, temple, shrine, room); same room; same place; same building | |
| 二葉 | によう | two flat things | |
| 一人ぼっち | ひとりぼっち | aloneness; loneliness; solitude | n1 |
| 第一線 | だいいっせん | the front (of a battlefield); forefront | |
| 一刻千金 | いっこくせんきん | every moment is precious; time is money; precious time | |
| 二度 | にど | two times; twice; two degrees | |
| 一入 | ひとしお | still more; especially | |
| 二流 | にりゅう | second-rate; inferior | |
| 一個人 | いっこじん | private person; individual | |
| 一人前 | いちにんまえ | one portion; one serving; one person; adult | n1 |
| 一三 | じゅうさん | thirteen; 13; king | |
| 一足飛び | いっそくとび | one leap (i.e. skipping intermediate stages); one jump; one step; one bound | n1 |
| 青二才 | あおにさい | green youth; immature youth; novice; greenhorn | |
| 一世一代 | いっせいちだい | once in a lifetime; the first and last occurrence (event, experience) of one's lifetime | |
| 遮二無二 | しゃにむに | desperately; recklessly; (rushing) headlong | |
| 一決 | いっけつ | agreed; settled | |
| 一級 | いっきゅう | one grade; first-class; primary | |
| 一人で | ひとりで | alone; by oneself; on one's own | |
| 一般化 | いっぱんか | generalization; generalisation; popularization; popularisation | |
| 一日千秋 | いちじつせんしゅう | (waiting) impatiently; (spending) many a weary day; each moment seeming like an eternity | |
| 一役 | ひとやく | role (which someone or something plays in a given situation); part; contribution (to a given situation) | n1 |
| 二の句 | にのく | next (spoken) word | |
| 一匹 | いっぴき | one (small animal); two-tan bolt of cloth | |
| 一昼夜 | いっちゅうや | whole day and night; 24 hours | |
| 十二単 | じゅうにひとえ | twelve-layered ceremonial kimono (worn by a court lady); ajuga (Ajuga nipponensis); bugle | |
| 一定期間 | いっていきかん | fixed interval; fixed period | |
| 一時停止 | いちじていし | suspension; pause; temporary halt; moratorium | |
| 一頃 | ひところ | once; some time ago | |
| 一晩 | ひとばん | one night; one evening; all night; overnight | n3 |
| 一興 | いっきょう | amusement; fun; brief entertainment | |
| 二女 | にじょ | second daughter | |
| 一理 | いちり | (a) principle; (a) reason; (a) point; some truth | n2 |
| 今一 | いまいち | not quite (right); not very good; somewhat (lacking) | n2 |
| 一糸 | いっし | thread; strand; string | n1 |
| 一走り | ひとはしり | (short) run; drive; ride; spin | |
| 一顧 | いっこ | slightest notice; slightest consideration; slightest attention; a little thought | |
| 一閃 | いっせん | flash (of light); glint; swift strike; quick decisive move | n1 |
| 一目瞭然 | いちもくりょうぜん | obvious; (as) clear as day; plain to see | n1 |
| 一廓 | いっかく | one block; enclosure | n2 |
| 二股 | ふたまた | seeing two people (i.e. romantically) at the same time; two-timing; bifurcation; fork | |
| 尋常一様 | じんじょういちよう | ordinary; common; mediocre | |
| 二号 | にごう | number two; mistress; concubine | |
| 二項 | にこう | binomial; binary; dyadic | |
| 一通り | ひととおり | generally; in the main; briefly (look over, explain, etc.); roughly | n2 |
| 二の足 | にのあし | second step; hesitation | |
| 一類 | いちるい | same kind; accomplices; companions | |
| 一体化 | いったいか | unification; integration | |
| 二つ目 | ふたつめ | second (in a series) | |
| 一驚 | いっきょう | surprise; amazement | |
| 百人一首 | ひゃくにんいっしゅ | (Ogura) Hyakunin Isshu; classical Japanese anthology of one hundred Japanese waka by one hundred poets; hyakunin isshu karuta; hyakunin isshu poetry cards | |
| 一矢 | いっし | one arrow; retort | n1 |
| 一蹴 | いっしゅう | flatly rejecting; curtly refusing; brushing aside; beating easily | n1 |
| 真一文字 | まいちもんじ | straight line; beeline | |
| 一両日 | いちりょうじつ | (a) day or two | |
| 一つ目 | ひとつめ | one-eyed; first (in a series); initial | |
| 一般向け | いっぱんむけ | for the general public; for the general market | |
| 一意 | いちい | one meaning; one thought; wholeheartedly; single-mindedly | n3 |
| 専一 | せんいち | exclusively; (taking) best care | |
| 一身上 | いっしんじょう | personal (affairs, reasons, etc.) | |
| 一木 | いちぼく | one tree | |
| 一週間 | いっしゅうかん | one week | |
| 一円 | いちえん | one yen; throughout (an area); whole district | |
| 一献 | いっこん | one cup (of sake); (going out for, treating someone to) a drink; small drinking party | |
| 一人子 | ひとりご | (an) only child | |
| 合一 | ごういつ | unification; union; oneness | |
| 一丸 | いちがん | one lump; one body; one group | n1 |
| 一六 | じゅうろく | sixteen; 16 | |
| 無一物 | むいちもつ | having nothing; being free of earthly attachments | |
| 一助 | いちじょ | (some small) help; an aid; some assistance | |
| 一席 | いっせき | sitting; feast; speech | |
| 第二義 | だいにぎ | secondary meaning; of secondary import | |
| 二つながら | ふたつながら | both | |
| 二宮 | にぐう | the Two Ise Shrines | |
| 一斉に | いっせいに | simultaneously; all at once; in unison | n2 |
| 一わたり | ひとわたり | generally; in the main; briefly (look over, explain, etc.); roughly | |
| 不二 | ふじ | being two sides of the same coin; being the same (while appearing different); Very sincerely yours; peerless | |
| 一人称 | いちにんしょう | first person; self-reference term; term used to refer to oneself in the first person | |
| 一つひとつ | ひとつひとつ | one-by-one; separately; in detail | |
| 一輪 | いちりん | single flower; one wheel; full moon | |
| 一重 | ひとえ | one layer; single layer; monopetalous; unlined kimono | |
| 一人物 | いちじんぶつ | person to be reckoned with; person of importance; one person; one character | |
| 一如 | いちにょ | oneness | |
| 一粒種 | ひとつぶだね | (one's precious) only child | |
| 一廉 | ひとかど | considerable; decent; respectable; full-fledged | |
| 一軍 | いちぐん | an army; the whole army; the entire force; first team | |
| 一本気 | いっぽんぎ | single-minded (esp. personality or person); one-track mind | |
| 二日 | ふつか | 2nd day of the month; two days | n5 |
| 一樹 | いちじゅ | one tree; a tree | |
| 一貫性 | いっかんせい | consistency | |
| 一宇 | いちう | one house; one roof | |
| 一髪 | いっぱつ | hair; hair's breadth | |
| 十重二十重 | とえはたえ | multitude | |
| 一面識 | いちめんしき | (a) passing acquaintance | |
| 緑一色 | リューイーソー | all green; winning hand consisting only of exclusively green tiles (green dragons and suited bamboo tiles of the numbers 2, 3, 4, 6 and 8) | |
| 間一髪 | かんいっぱつ | hair's breadth | |
| 一騎当千 | いっきとうせん | being a match for a thousand; being a mighty warrior (combatant, player) | |
| 一国 | いっこく | one country; the whole nation; the whole country; stubborn | n1 |
| 二元論 | にげんろん | dualism | |
| 無一文 | むいちもん | penniless; broke | |
| 不一致 | ふいっち | discrepancy; discord; disagreement; mismatch | |
| 無二無三 | むにむさん | in earnest; single-minded; with intense concentration; rushing headlong into | |
| 一期 | いちご | one's whole life; one's lifetime | n5 |
| 一元 | いちげん | single element; unitary; one era; one unknown | |
| 一揖 | いちゆう | slight bow | |
| 一巻 | いっかん | one roll; one book; one volume; first volume | n1 |
| 二本差 | にほんざし | two-sworded (samurai) | |
| 片一方 | かたいっぽう | one side; one party; the other side; the other party | |
| 十二指腸潰瘍 | じゅうにしちょうかいよう | duodenal ulcer | |
| 一昔 | ひとむかし | an age (ago); a long time (ago); a decade (ago) | n1 |
| 紙一重 | かみひとえ | paper-thin (difference); razor-thin; very slight | |
| 二の次 | にのつぎ | secondary; of secondary importance | n1 |
| 一昨昨日 | いっさくさくじつ | two days before yesterday; three days back (ago) | |
| 一言半句 | いちげんはんく | a single word; (not even) a word; (not even) a syllable | |
| 二級 | にきゅう | second grade; second class; secondary | |
| 三位一体 | さんみいったい | the Trinity; three parts; three components; three factors | |
| 一軒 | いっけん | one house | n2 |
| 一郭 | いっかく | one block; enclosure | n2 |
| 一個 | いっこ | one (thing); one piece; one item | |
| 二君 | にくん | two masters | |
| 腹一杯 | はらいっぱい | having a full stomach; being full; to one's heart's content | |
| 一字 | いちじ | (one) letter; (one) character | n3 |
| 一指 | いっし | one finger | n1 |
| 一宮 | いちのみや | most important provincial shrine; first-born imperial prince | |
| 一寸法師 | いっすんぼうし | dwarf; midget; elf; Tom Thumb | |
| 一双 | いっそう | pair (esp. of folding screens) | n2 |
| 一癖 | ひとくせ | trait; peculiarity; idiosyncrasy | |
| 一夫多妻制 | いっぷたさいせい | polygyny | |
| 一子 | いっし | one child; only child; one of several children (esp. the son and heir); one stone | n1 |
| 一本調子 | いっぽんぢょうし | monotone; monotonous; dull; lacking variety | n1 |
| 一八 | じゅうはち | eighteen; 18 | |
| 一塁 | いちるい | first base; first baseman; one fort | |
| 手一杯 | ていっぱい | having one's hands full; not having any room to do more; at the limit | |
| 二子 | ふたご | twins; twin | n3 |
| 第一次 | だいいちじ | the first ...; primary | |
| 二種 | にしゅ | two kinds; second-class (e.g. mail) | |
| 一汁一菜 | いちじゅういっさい | one-plate meal; simple meal; austerity diet | |
| 二本 | にほん | two (long cylindrical things) | n5 |
| 一翼 | いちよく | one wing; (a) role; (a) part | |
| 一芸 | いちげい | an art; one talent | |
| 二八 | にはち | sixteen | |
| 一本立ち | いっぽんだち | independence | |
| 一再 | いっさい | once or twice; repeatedly | n2 |
| 一首 | いっしゅ | one tanka; one poem | n2 |
| 一人ぽっち | ひとりぼっち | aloneness; loneliness; solitude | n1 |
| 一札 | いっさつ | document; bond | |
| 一考 | いっこう | consideration; thought | |
| 二目 | ふため | for a second time | |
| 一騎打ち | いっきうち | single combat; duel; one-on-one fight | |
| 一体に | いったいに | generally; in general | |
| 一番星 | いちばんぼし | first star of the evening (esp. Venus); evening star | |
| 第一種 | だいいっしゅ | type 1; category 1; first class | |
| 一生けん命 | いっしょうけんめい | very hard; with utmost effort; as hard as one can; with all one's might | n3 |
| 二の丸 | にのまる | outer citadel | |
| 一死 | いっし | dying; laying down one's life; one out | n1 |
| 一筋縄 | ひとすじなわ | (piece of) rope; ordinary method | |
| 一筋繩 | ひとすじなわ | (piece of) rope; ordinary method | |
| 第一号 | だいいちごう | the first; first issue; first number | |
| 一くさり | ひとくさり | passage in a discourse; one section; one scene | |
| 一雨 | ひとあめ | shower; rainfall | |
| 二枚 | にまい | two sheets (of paper or other flat objects) | |
| 第一声 | だいいっせい | first words said (e.g. when meeting someone); first thing out of one's mouth; first speech; inaugural address | |
| 二心 | ふたごころ | duplicity; treachery; double-dealing | |
| 二刀流 | にとうりゅう | liking both alcohol and sweets; person who likes both liquor and sweets; bisexuality; player who can play as both pitcher and fielder | |
| 一周忌 | いっしゅうき | first anniversary of a person's death | |
| 一つとして | ひとつとして | (not) a single one; (not) any; (not) at all; (not) in the slightest | |
| 一丁 | いっちょう | one leaf (of a book bound in Japanese style); one block of tofu; one serving (in a restaurant); one long and narrow thing (e.g. a gun, scissors, spade, hoe, inkstick, palanquin, candle, jinrikisha, shamisen, oar) | |
| 二元 | にげん | duality; binary (system) | |
| 一号 | いちごう | number one; item 1 | |
| 一件 | いっけん | (one) matter; (one) item; (one) case | n2 |
| 一刀両断 | いっとうりょうだん | cutting in two with a single stroke; taking decisive action; dealing with decisively; cutting the (Gordian) knot | |
| 一辺倒 | いっぺんとう | complete devotion (to); total commitment (to); unvarying support (for); unwavering fixation (on) | n1 |
| 一飛び | ひととび | one jump; one flight; (at) once; (in) one stroke | |
| 二次会 | にじかい | after-party; second party (of the night); second meeting | |
| 一夫多妻 | いっぷたさい | polygamy; polygyny | |
| 一杯機嫌 | いっぱいきげん | tipsy; a little drunk; slightly intoxicated | |
| 第一次世界大戦 | だいいちじせかいたいせん | First World War (1914-1918); World War I; WWI; WW1 | |
| 一張羅 | いっちょうら | one's only good clothes (suit, dress, etc.); one's only suit of clothes; one's best clothes; one's Sunday best | |
| より一層 | よりいっそう | still more; even more; much more; all the more | |
| 一喜一憂 | いっきいちゆう | alternating between happiness and anxiety; swinging between joy and sorrow; being glad and sad by turns; oscillating between optimism and pessimism | |
| 二つ返事 | ふたつへんじ | immediate reply; quick answer; ready agreement | |
| 一位 | いちい | first place; first rank; units position (of a number) | n3 |
| 一番鶏 | いちばんどり | first cockcrowing | |
| 第二種 | だいにしゅ | type 2; category 2; second class | |
| 一緒くた | いっしょくた | jumble; hodgepodge; potpourri; heterogenous mixture | |
| 一挙手一投足 | いっきょしゅいっとうそく | one's every action; every single move; slight effort; least trouble | |
| 一戦 | いっせん | battle; game; bout | n1 |
| 一案 | いちあん | idea; plan | n1 |
| 一気 | いっき | one breath; chug!; drink! | |
| 男一匹 | おとこいっぴき | shining example of a man | |
| 一挙両得 | いっきょりょうとく | killing two birds with one stone; serving two ends | |
| 一報 | いっぽう | information; (brief) notice; letting someone know; dropping a line | n4 |
| 二番 | にばん | second; number two; runner-up | |
| 二の舞 | にのまい | ... all over again (repeating the same failure) | |
| 天下一 | てんかいち | unique thing; best on earth | |
| 心機一転 | しんきいってん | changing one's attitude; turning over a new leaf; getting a fresh start | |
| 一二 | いちに | one or two; a couple; a few; first and second (place) | |
| 帰一 | きいつ | united into one | |
| 一過 | いっか | passing (e.g. of a typhoon); going past | n1 |
| 一台 | いちだい | one machine; one vehicle | |
| 二回 | にかい | twice | |
| 一人っ子 | ひとりっこ | (an) only child | |
| 一一 | いちいち | one-by-one; separately; every single; each and every | n2 |
| 一石二鳥 | いっせきにちょう | killing two birds with one stone | n2 |
| 一纏め | ひとまとめ | bundle; pack; bunch | n1 |
| 一女 | いちじょ | one daughter; eldest daughter; first-born daughter | |
| 二更 | にこう | second watch (approx. 9pm to 11pm) | |
| 二道 | ふたみち | branch roads; forked roads; crossroads; two ways (of proceeding) | |
| 一網打尽 | いちもうだじん | round-up (e.g. of criminals); wholesale arrest; catching the whole herd with one throw | |
| 一体感 | いったいかん | (feeling of) identification; sense of unity | |
| 万々一 | まんまんいち | (if) by some very rare chance; in the very unlikely event that ... | |
| もう一方 | もういっぽう | the other; the other one | |
| 一苦労 | ひとくろう | a hard time; pains | n1 |
| 一齣 | ひとコマ | one scene; one frame; one shot; one exposure | |
| 一代記 | いちだいき | biography | |
| 一抱え | ひとかかえ | armful; bundle | |
| 中二階 | ちゅうにかい | mezzanine floor | |
| 一切合切 | いっさいがっさい | any and every thing; altogether; lock, stock, and barrel; the whole shooting match | |
| 一夫一婦 | いっぷいっぷ | monogamy | |
| 一期一会 | いちごいちえ | once-in-a-lifetime encounter; uniquely precious experience; one lifetime, one meeting | |
| 天下一品 | てんかいっぴん | beyond compare; peerless; unrivaled; unique | |
| 一つ話 | ひとつばなし | anecdote; common talk | |
| 一般参賀 | いっぱんさんが | congratulatory visit to the Imperial Palace (for New Year and the Emperor's birthday) | |
| 二位 | にい | second place | |
| 二重瞼 | ふたえまぶた | double-edged eyelid | |
| 一昨々日 | いっさくさくじつ | two days before yesterday; three days back (ago) | |
| 一方ならず | ひとかたならず | unusually; greatly; immensely; exceedingly | |
| 一毫 | いちごう | (a) bit; (a) trifle | |
| 一眸 | いちぼう | one sweep (of the eye); sweeping view; unbroken view | |
| 一義 | いちぎ | one meaning; primary importance; primary significance; primary consideration | |
| 二三日 | にじゅうさんにち | 23rd day of the month; 23 days | |
| 一般常識 | いっぱんじょうしき | common sense; general knowledge; common knowledge | |
| 一食 | いっしょく | one meal; one meal (a day) | |
| 裸一貫 | はだかいっかん | having nothing except one's body; having empty pockets; being penniless | |
| 唯一無二 | ゆいいつむに | one and only; unique | |
| 二番目 | にばんめ | second (in a series) | |
| 一国一城 | いっこくいちじょう | (possession of) one feudal domain and one castle; being independent (acting without compromise or assistance); establishing only one castle in each feudal domain (edict issued by the shogunate in 1615) | |
| 一衣帯水 | いちいたいすい | (being separated only by a) narrow strip of water; narrow strait (channel, river) | |
| 一進一退 | いっしんいったい | now advancing and now retreating; ebb and flow; seesawing; taking alternately favorable and unfavorable turns | |
| 二日酔い | ふつかよい | hangover | |
| 一軸 | いちじく | uniaxial | |
| 三一 | さんぴん | low-ranking samurai; rolling three and one (in a dice game) | |
| 二輪 | にりん | two wheels; two flowers | |
| 第一流 | だいいちりゅう | first-class | |
| 統一感 | とういつかん | sense of unity; sense of oneness | |
| 一列 | いちれつ | (a) row; line | |
| 一眠り | ひとねむり | nap; short sleep; first sleep of silkworms | |
| 二言目 | ふたことめ | favorite phrase; favourite phrase; byword; something one always talks about | |
| 一切経 | いっさいきょう | complete Buddhist scriptures | |
| 二度目 | にどめ | the second time | |
| 二十日鼠 | はつかねずみ | house mouse (Mus musculus) | |
| 二律背反 | にりつはいはん | antinomy; self-contradiction; either-or situation; choice between mutually exclusive alternatives | |