| 簡単 | かんたん | simple; easy; uncomplicated; brief | n5 |
| 単に | たんに | simply; merely; only; solely | n3 |
| 単純 | たんじゅん | simple; plain; uncomplicated; straightforward | n3 |
| 単なる | たんなる | mere; simple; sheer | n2 |
| 単調 | たんちょう | monotony; monotone; dullness; monotone | n2 |
| 単位 | たんい | unit (e.g. meters, grams, etc.); denomination; unit (i.e. one comprised of many); group | n3 |
| 単独 | たんどく | sole; single; solo; independence | n1 |
| 単語 | たんご | word; vocabulary | n3 |
| 単身 | たんしん | alone; by oneself; unaccompanied; unaided | n2 |
| 単一 | たんいつ | single; simple; sole; individual | n1 |
| 単行本 | たんこうぼん | standalone book (i.e. not part of an anthology, series, etc.); (book published as a) single volume; tankōbon; individual volume of a manga series | n1 |
| 単 | たん | single; simple; singles (tennis, badminton, etc.); win bet (bet which predicts the winner of a race) | |
| 単行 | たんこう | going alone; travelling by oneself; doing independently; doing separately | |
| 単価 | たんか | unit price; unit cost | |
| 英単語 | えいたんご | English word | |
| 単刀直入 | たんとうちょくにゅう | straight to the point; point-blank; frank; direct | |
| 単体 | たんたい | simple substance (e.g. chemical); something standing alone; separate item; solo item | |
| 単品 | たんぴん | individual item (i.e. not part of a set); single article; single item out of a set; one item from a set | |
| 単色 | たんしょく | single colour (color); monochrome | |
| 単騎 | たんき | single horseman; wait for one tile to finish one's pair and one's hand; wait for half of one's pair with four melds completed | n2 |
| 単焦点 | たんしょうてん | monofocal; fixed focal length; single focus | |
| 単物 | ひとえもの | unlined kimono | |
| 単簡 | たんかん | simple; easy; uncomplicated | |
| 単衣物 | ひとえもの | unlined kimono | |
| 単数 | たんすう | single; one; singular (number) | |
| 十二単 | じゅうにひとえ | twelve-layered ceremonial kimono (worn by a court lady); ajuga (Ajuga nipponensis); bugle | |
| 単式 | たんしき | simple system; single-entry (bookkeeping) | |
| 単発 | たんぱつ | firing one shot at a time; single-shot gun; having only one engine; single-engined aeroplane | |
| 油単 | ゆたん | oilcloth | |
| 単線 | たんせん | single track (railway); single line; solid wire; solid-core wire | |
| 単元 | たんげん | teaching unit; module | |
| 単体テスト | たんたいテスト | unit test; testing an item in isolation | |
| 単勝式 | たんしょうしき | win bet (bet which predicts the winner of a race) | |
| 単細胞 | たんさいぼう | single cell; simple-minded; one-track-minded | |
| 単一化 | たんいつか | simplification; unification | |
| 単衣 | たんい | unlined kimono; one kimono; a single kimono | n3 |
| 単弁 | たんべん | monopetalous; univalve | |
| 単瓣 | たんべん | monopetalous; univalve | |
| 単葉 | たんよう | simple leaf; unifoliate leaf; monoplane (aircraft) | |
| 単音 | たんおん | single sound; monosyllable; phone; monotone (harmonica, etc.) | |
| 単純化 | たんじゅんか | simplification | |
| 単勝 | たんしょう | winning at the races | |
| 伝単 | でんたん | propaganda leaflet | |
| 単語帳 | たんごちょう | vocabulary notebook; ring of vocabulary flash cards | |
| 単級 | たんきゅう | single-grade (classroom) | n2 |
| 単打 | たんだ | base hit; one-base hit; single | |
| 単複 | たんぷく | simplicity and complexity; singular and plural; single and double; singles and doubles (in tennis) | |
| 高単価 | こうたんか | high unit cost; high unit price | |
| 単科大学 | たんかだいがく | one-faculty university; one-faculty college | |
| 単記 | たんき | single-entry (bookkeeping); voting for one person only | n2 |
| 単眼 | たんがん | single eye; one eye; single lens; simple eye | |
| 単糖 | たんとう | monosaccharide | n3 |
| 単板 | たんばん | veneer (e.g. wood products); single panel (e.g. electronics, optics, automotive); single plate | |
| 単著 | たんちょ | single authorship (of a book, paper, etc.); single-author work | |
| 単結晶 | たんけっしょう | monocrystal; single crystal | |
| 単焦点レンズ | たんしょうてんレンズ | monofocal lens; fixed focal length lens; prime lens | |
| 単身者 | たんしんしゃ | person living alone; single person; bachelor; spinster | |
| 単身赴任 | たんしんふにん | taking up a post away from one's family; job transfer without one's family; living apart from one's family for the sake of one's job; unaccompanied posting | |
| 単座 | たんざ | single-seater; single-seated; sitting alone | |
| 単相 | たんそう | single-phase alternating current; haploid phase (of an organism, cell, etc.); haplophase | |
| 単本位 | たんほんい | single standard; monometallism; monometalism | |
| 単独行 | たんどくこう | solo hiking; solo climbing; solo travel | |
| 単系統 | たんけいとう | monophyletic | |
| 単純性 | たんじゅんせい | simplicity | |
| 単結合 | たんけつごう | single bond | |
| 単語集 | たんごしゅう | word book | |
| 原単位 | げんたんい | output level (e.g. in manufacturing); consumption rate (e.g. fuel, power); intensity | |
| 単舎利別 | たんしゃりべつ | simple syrup; solution of white sugar | |
| 単筒 | たんとう | single barrel; single-barrelled | n3 |
| 単機 | たんき | lone plane | n2 |
| 単球 | たんきゅう | monocyte | n2 |
| 単作 | たんさく | single crop | n1 |
| 単層 | たんそう | monolayer; single layer; single story (storey) | |
| 単立 | たんりつ | establishing something (e.g. a company or a religious order) by oneself; company or religious order founded in such a way | |
| 単管 | たんかん | single pipe; single tube; single cylinder | |
| 単糸 | たんし | single yarn (in spinning) | |
| 単胎 | たんたい | single pregnancy; monotocous pregnancy | |
| 単装 | たんそう | single mounting | |
| 単離 | たんり | isolation (e.g. of a particular chemical substance within a mixture) | |
| 単数形 | たんすうけい | singular form (of a noun) | |
| 単糖類 | たんとうるい | monosaccharides | |
| 単一神教 | たんいつしんきょう | henotheism | |
| 国際単位 | こくさいたんい | international unit; SI unit; IU | |
| 基本単位 | きほんたんい | base unit (metre, etc.); standard unit | |
| 通貨単位 | つうかたんい | monetary unit; currency unit | |
| 単二 | たんに | C battery; C cell | n3 |
| 単五 | たんご | N battery; N cell | n3 |
| 単刀 | たんとう | (only) one sword; wielding a sword alone; being straight to the point | n3 |
| 単意 | たんい | univocal | n3 |
| 単皮 | たび | tabi; traditional split-toe socks | n3 |
| 単2 | たんに | C battery; C cell | n3 |
| 単5 | たんご | N battery; N cell | n3 |
| 単性 | たんせい | unisexual | n1 |
| 楽単 | らくたん | easy subject; (university) course that anyone can pass; easy A | n1 |
| 菜単 | さいたん | menu (at a Chinese restaurant) | n1 |
| 冪単 | べきたん | unipotent | |
| 単三 | たんさん | AA battery; AA cell | |
| 単于 | ぜんう | Chanyu (supreme leader of the Xiongnu people) | |
| 単六 | たんろく | AAAA battery; AAAA cell | |
| 単利 | たんり | simple interest | |