| 不思議 | ふしぎ | wonderful; marvelous; strange; incredible | n4 |
| 不安 | ふあん | anxiety; uneasiness; worry; apprehension | n4 |
| 不明 | ふめい | unclear; obscure; indistinct; uncertain | n2 |
| 不足 | ふそく | insufficiency; deficiency; shortage; lack | n3 |
| 不幸 | ふこう | unhappiness; sorrow; misfortune; disaster | n1 |
| 不動産 | ふどうさん | real estate | n3 |
| 不 | ふ | un-; non- | n3 |
| 不意 | ふい | sudden; abrupt; unexpected; unforeseen | n2 |
| 不可能 | ふかのう | impossible | n2 |
| 不自由 | ふじゆう | discomfort; inconvenience; poverty; want | n2 |
| 不快 | ふかい | displeasure; discomfort; unpleasantness; indisposition | n2 |
| 不満 | ふまん | dissatisfaction; discontent; displeasure; complaint | n4 |
| 不審 | ふしん | doubt; suspicion; question; strangeness | n1 |
| 不平 | ふへい | discontent; dissatisfaction; complaint; grievance | n2 |
| 不要 | ふよう | unnecessary; unneeded | n3 |
| 不愉快 | ふゆかい | unpleasant; disagreeable; displeasing; uncomfortable | n2 |
| 不自然 | ふしぜん | unnatural; artificial; affected; strained | n2 |
| 不十分 | ふじゅうぶん | insufficient; inadequate; imperfect | n2 |
| 不便 | ふべん | inconvenience; inexpediency; unhandiness | n4 |
| 不気味 | ぶきみ | weird; eerie; ominous; creepy | |
| 不適切 | ふてきせつ | unsuitable; inappropriate; improper | |
| 不良 | ふりょう | bad; poor; inferior; defective | n2 |
| 不断 | ふだん | constant; persistent; unremitting; ceaseless | n3 |
| 不正 | ふせい | injustice; unfairness; wrongdoing; iniquity | n1 |
| 不可 | ふか | wrong; bad; improper; unjustifiable | n2 |
| 不都合 | ふつごう | inconvenient; inexpedient; unfavourable; troublesome | n2 |
| 不当 | ふとう | unfair; unjust; wrongful; improper | n1 |
| 不服 | ふふく | dissatisfaction; discontent; disapproval; objection | n1 |
| 不在 | ふざい | absence; disregard; indifference | n1 |
| 不機嫌 | ふきげん | pout; displeasure; ill humor; ill humour | n1 |
| 不利 | ふり | disadvantage; handicap; unfavorable position | n1 |
| 不可欠 | ふかけつ | indispensable; essential | n2 |
| 不吉 | ふきつ | ominous; sinister; unlucky; inauspicious | |
| 不倫 | ふりん | adultery; impropriety; (an) affair; immorality | n1 |
| 不動 | ふどう | immovable; motionless; firm; unwavering | |
| 不完全 | ふかんぜん | imperfect; incomplete; faulty; defective | n2 |
| 不可思議 | ふかしぎ | mystery; something inexplicable; wonder; miracle | |
| 不覚 | ふかく | failure; defeat; mistake; blunder | |
| 不運 | ふうん | misfortune; bad luck; ill luck; ill fortune | |
| 不調 | ふちょう | bad condition; poor condition; disorder; slump | n3 |
| 不可解 | ふかかい | incomprehensible; mysterious; inexplicable; inscrutable | n1 |
| 不具 | ふぐ | deformity; distortion; disability; cripple | |
| 不安定 | ふあんてい | instability; insecurity; crankiness | n2 |
| 不規則 | ふきそく | irregular; unsystematic; unsteady; disorderly | n3 |
| 不景気 | ふけいき | economic slump; hard times; depression; recession | n1 |
| 不潔 | ふけつ | unclean; dirty; unsanitary; filthy | |
| 不器用 | ぶきよう | clumsy; awkward; unskillful; incompetent | n1 |
| 不具合 | ふぐあい | flaw; defect; problem; bug | n2 |
| 不能 | ふのう | impossible; incapable (of doing); unable (to do); incompetence | n1 |
| 不義 | ふぎ | immorality; injustice; misconduct; impropriety | |
| 不敵 | ふてき | daring; fearless; intrepid; bold | n1 |
| 不用 | ふよう | disused; unused; useless; wasteful | n3 |
| 不利益 | ふりえき | disadvantage; handicap; drawback; inadvisability | n1 |
| 不用意 | ふようい | unprepared; careless; imprudent; indiscreet | n1 |
| 不注意 | ふちゅうい | carelessness; inattention; thoughtlessness; negligence | n1 |
| 不憫 | ふびん | poor; pitiful; piteous; pitiable | |
| 不眠 | ふみん | sleeplessness; insomnia; wakefulness | |
| 不変 | ふへん | eternal; everlasting; unchangeable; immutable | n1 |
| 不純 | ふじゅん | impure; adulterated; foul; mixed | n2 |
| 不合理 | ふごうり | irrational; illogical; unreasonable; absurd | |
| 不調和 | ふちょうわ | disharmony; discord; dissonance; incongruity | |
| 不精 | ぶしょう | indolence; laziness; sloth | |
| 不遇 | ふぐう | misfortune; ill fate; bad luck; obscurity | n2 |
| 不滅 | ふめつ | immortal; undying; indestructible | |
| 不備 | ふび | defect; deficiency; imperfection; inadequacy | n1 |
| 不浄 | ふじょう | unclean; dirty; impure; bathroom | |
| 体調不良 | たいちょうふりょう | health problem; poor physical health; bad shape; feeling unwell | |
| 不知 | ふち | being unknown; not knowing; ignorance; foolishness | n1 |
| 不穏 | ふおん | disquieting; threatening; turbulent; restless | n1 |
| 不埒 | ふらち | lawless; outrageous; insolent; rude | |
| 不孝 | ふこう | undutifulness to one's parents; lack of filial piety; (the crime of) cursing one's parents; disowning one's child | n1 |
| 不向き | ふむき | unfit; unsuitable; unmarketable | n1 |
| 不公平 | ふこうへい | unfairness; injustice; partiality | n2 |
| 不和 | ふわ | discord; trouble; dissension; disagreement | |
| 不名誉 | ふめいよ | dishonor; dishonour; disgrace; shame | |
| 不味い | まずい | bad(-tasting); unpalatable; unsavoury; unsavory | n5 |
| 不信 | ふしん | distrust; mistrust; disbelief; discredit | n1 |
| 不朽 | ふきゅう | everlasting; immortal; eternal; enduring | n2 |
| 不詳 | ふしょう | unknown; unidentified; unspecified | n1 |
| 不条理 | ふじょうり | absurd; irrational; unreasonable; illogical | |
| 不作法 | ぶさほう | ill-mannered; rude | |
| 不明瞭 | ふめいりょう | unclear; indistinct; obscure; opaque | |
| 不心得 | ふこころえ | indiscretion; imprudence; rudeness; misbehavior | |
| 不快感 | ふかいかん | discomfort; displeasure | |
| 不肖 | ふしょう | unworthy (of one's father, teacher, etc.); I; me; incompetent | n1 |
| 不貞 | ふてい | unfaithfulness; infidelity; unchastity | |
| 不登校 | ふとうこう | truancy; school non-attendance | n1 |
| 不案内 | ふあんない | ignorance; inexperience; unfamiliarity | |
| 不相応 | ふそうおう | unsuited; inappropriate; improper; undeserved | |
| 一心不乱 | いっしんふらん | wholeheartedly; with heart and soul; intently; with undivided attention | |
| 不充分 | ふじゅうぶん | insufficient; inadequate; imperfect | n2 |
| 不遜 | ふそん | haughty; arrogant; insolent; presumptuous | |
| 不死 | ふし | immortality; eternal life; undeath; undead | n2 |
| 不面目 | ふめんぼく | shame; disgrace | |
| 不慮 | ふりょ | unforeseen; unexpected; sudden; accidental | n1 |
| 不徳 | ふとく | lack of virtue; immorality; vice; depravity | |
| 不通 | ふつう | suspension; interruption; stoppage; tie-up | n4 |
| 不屈 | ふくつ | persistence; fortitude; indomitability | |
| 不法 | ふほう | unlawful; illegal; unreasonable; outrageous | |
| 不興 | ふきょう | displeasure; ill humour; ill humor; pique | n1 |
| 不問 | ふもん | not asking (about); letting go unquestioned; disregarding; ignoring | |
| 不如意 | ふにょい | contrary to one's wishes; gone awry; gone amiss; short of money | |
| 不親切 | ふしんせつ | unkindness; unfriendliness | |
| 理不尽 | りふじん | unreasonable; irrational; outrageous; absurd | |
| 不恰好 | ぶかっこう | unshapely; ill-formed; misshapen; awkward | |
| 不承知 | ふしょうち | dissent; disagreement; disapproval; objection | |
| 不振 | ふしん | dullness; slump; stagnation; inactivity | n1 |
| 不人情 | ふにんじょう | unkindness; inhumanity; heartlessness | |
| 不仕合せ | ふしあわせ | unhappiness; misfortune; ill luck | |
| 不満足 | ふまんぞく | dissatisfaction; discontent; displeasure | |
| 不道徳 | ふどうとく | immorality; iniquity; impropriety | |
| 不定 | ふてい | unsettled; uncertain; indefinite; unfixed | |
| 不賛成 | ふさんせい | disapproval; disagreement | |
| 不透明 | ふとうめい | opaque; obscure; murky; turbid | n1 |
| 不出来 | ふでき | bad job; poor workmanship; bungle | n1 |
| 不使用 | ふしよう | disuse; not using; non-usage | |
| 不祥事 | ふしょうじ | scandal; impropriety; misconduct | n1 |
| 不謹慎 | ふきんしん | imprudent; indiscreet; immodest; indecent | |
| 不況 | ふきょう | (economic) depression; recession; slump | n1 |
| 不忠 | ふちゅう | disloyalty; infidelity | |
| 不時 | ふじ | emergency; unexpectedness | |
| 不可抗力 | ふかこうりょく | act of God; irresistible force; inevitability; force majeure | |
| 不健全 | ふけんぜん | morbid; unhealthful; insalubrious | |
| 不健康 | ふけんこう | poor health; ill health; unhealthy | |
| 不勉強 | ふべんきょう | idleness; lack of application; lazy study habits | |
| 不眠症 | ふみんしょう | sleeplessness; insomnia; wakefulness | |
| 親不孝 | おやふこう | lack of filial piety; disobedience to one's parents; ungrateful child; unfilial child | |
| 不逞 | ふてい | recalcitrant; insubordinate; lawless; disaffected | |
| 不得手 | ふえて | weak point; unskillfulness | n2 |
| 寝不足 | ねぶそく | lack of sleep; insufficient sleep | n2 |
| 不祥 | ふしょう | disgraceful; inauspicious; ill-omened; ominous | n1 |
| 不確か | ふたしか | unreliable; uncertain; indefinite; unclear | n1 |
| 不調法 | ぶちょうほう | carelessness; clumsiness; lack of consideration; ineptitude | |
| 不躾 | ぶしつけ | ill-bred; impolite; rude; impudent | |
| 不得要領 | ふとくようりょう | vague; ambiguous; noncommittal; off-point | |
| 不実 | ふじつ | perfidiousness; faithlessness; inconstancy; insincerity | |
| 不意打ち | ふいうち | surprise attack; surprise visit; catching a person off guard | |
| 不毛 | ふもう | barren; sterile; infertile; unproductive (e.g. discussion) | n1 |
| 不敬 | ふけい | disrespect; irreverence; impiety; blasphemy | |
| 不用心 | ぶようじん | unsafe; insecure; careless; dangerous | |
| 不全 | ふぜん | partial; incomplete; imperfect | |
| 不届き | ふとどき | outrageous; reprehensible; rude; insolent | |
| 不二 | ふじ | being two sides of the same coin; being the same (while appearing different); Very sincerely yours; peerless | |
| 不承不承 | ふしょうぶしょう | reluctantly; grudgingly; unwillingly | |
| 人事不省 | じんじふせい | unconsciousness | |
| 不愍 | ふびん | poor; pitiful; piteous; pitiable | |
| 不純物 | ふじゅんぶつ | foreign matter; impurities | |
| 不釣合 | ふつりあい | imbalance; disproportion; disparity; mismatch | |
| 不揃い | ふぞろい | uneven; irregular; non-uniform; unsorted | n2 |
| 不定期 | ふていき | irregular (schedule, service, etc.); indeterminate (length of time); staggered (payments) | |
| 不束 | ふつつか | inexperienced; incompetent; inept; incapable | |
| 不測 | ふそく | unexpected; unforeseen; accidental | n1 |
| 不細工 | ぶさいく | clumsy (work); awkward; poorly made; botched | |
| 不作 | ふさく | poor crop; bad harvest; crop failure; low quality (e.g. of literary works) | |
| 不妊 | ふにん | infertility; sterility; barrenness | n1 |
| 不一致 | ふいっち | discrepancy; discord; disagreement; mismatch | |
| 運動不足 | うんどうぶそく | lack of physical exercise; insufficient exercise; inactivity | |
| 不手際 | ふてぎわ | clumsiness; awkwardness; ineptitude | |
| 優柔不断 | ゆうじゅうふだん | indecisive; irresolute; shilly-shally; vacillating | |
| 不承 | ふしょう | dissent; disagreement; disapproval; objection | n1 |
| 不死身 | ふじみ | invulnerability; immortality; insensibility to pain | |
| 不徹底 | ふてってい | inconsistent; illogical; unconvincing; not thorough | |
| 不体裁 | ふていさい | bad form or manners; indecency; impropriety | |
| 不動明王 | ふどうみょうおう | Acala (Wisdom King); Acalanatha; Fudō Myōō (Myō-ō); fierce Buddhist deity | |
| 不撓 | ふとう | unbending; inflexible; tenacity; indomitableness | n1 |
| 不順 | ふじゅん | irregular; unseasonable; changeable; unsettled | n2 |
| 不文 | ふぶん | unwritten; illiterate; uneducated; poor writing | |
| 不合格 | ふごうかく | (examination) failure; rejection; disqualification | |
| 不見識 | ふけんしき | thoughtless; indiscreet; lacking in common sense; rashness | |
| 不起訴 | ふきそ | nonprosecution; nonindictment | |
| 不首尾 | ふしゅび | failure; poor result; disfavour; disfavor | |
| 不甲斐ない | ふがいない | good-for-nothing; spineless; gutless; spiritless | |
| 不治 | ふじ | incurability | |
| 不明確 | ふめいかく | inaccurate; indistinct; imprecise; unclear | |
| 不義理 | ふぎり | neglect of one's social obligations; failure to perform one's social duties; dishonor; dishonour | |
| 不誠実 | ふせいじつ | insincerity; dishonesty; untruthfulness; bad faith | |
| 睡眠不足 | すいみんぶそく | lack of sleep; sleep deprivation | |
| 不易 | ふえき | constancy; immutable | |
| 不平等 | ふびょうどう | inequality; unfairness | n1 |
| 不料簡 | ふりょうけん | indiscretion; bad idea; thoughtlessness; indiscreetness | |
| 不行跡 | ふぎょうせき | misconduct; misbehaviour; impropriety; profligacy | |
| 不得意 | ふとくい | one's weak point | n2 |
| 不整脈 | ふせいみゃく | arrhythmia; abnormal heartbeat | |
| 手不足 | てぶそく | shorthanded; understaffed | |
| 万夫不当 | ばんぷふとう | being a match for thousands; being a mighty warrior (combatant) | |
| 不可分 | ふかぶん | inseparable; indivisible; undetachable | n1 |
| 不同 | ふどう | difference; diversity; irregularity; disorder | |
| 不正確 | ふせいかく | inaccurate; incorrect; inexact; imprecise | |
| 不正直 | ふしょうじき | dishonesty; untruthfulness | |
| 債務不履行 | さいむふりこう | default on a debt | |
| 不信心 | ふしんじん | impiety; unbelief; infidelity | |
| 行方不明 | ゆくえふめい | missing (of a person); lost; unaccounted for; whereabouts unknown | |
| 食欲不振 | しょくよくふしん | lack of appetite; anorexia | |
| 不慣れ | ふなれ | inexperienced; unfamiliar (with); unversed; lacking experience | n1 |
| 過不足 | かふそく | excess or deficiency; too much or too little | n1 |
| 不信感 | ふしんかん | distrust; suspicion | n1 |
| 不馴れ | ふなれ | inexperienced; unfamiliar (with); unversed; lacking experience | n1 |
| 勉強不足 | べんきょうぶそく | insufficient study | |
| 不為 | ふため | disadvantageous; harmful; unprofitable | |
| 不可避 | ふかひ | inevitable; inescapable; unavoidable | |
| 不意に | ふいに | suddenly; abruptly; unexpectedly | |
| 七不思議 | ななふしぎ | seven wonders (of a particular area); total mystery; enigma; conundrum | |
| 不漁 | ふりょう | poor catch (fishing) | n2 |
| 不器量 | ぶきりょう | ugly (of a person); plain; unattractive; homely | |
| 不知火 | しらぬい | phosphorescent light; mysterious lights on the sea; sea fire; shiranui (Citrus reticulata Shiranui) | |
| 不治の病 | ふじのやまい | incurable illness | |
| 不羈 | ふき | freedom; liberty; independence | |
| 不老 | ふろう | perennial youth; eternal youth | |
| 不品行 | ふひんこう | unchastity; misconduct; dissipation; fornication | |
| 不言 | ふげん | silence | |
| 必要不可欠 | ひつようふかけつ | absolutely essential; indispensable; vital; critical | |
| 不本意 | ふほんい | reluctant; unwilling; involuntary; unintentional | n1 |
| 不老不死 | ふろうふし | perpetual youth and longevity; immortality | |
| 不適 | ふてき | inadequacy; inappropriateness; unfitness; impropriety | n1 |
| 不如帰 | ホトトギス | lesser cuckoo (Cuculus poliocephalus) | |
| 人手不足 | ひとでぶそく | labour shortage; labor shortage; shortage of workers; shortage of hands | |
| 不明点 | ふめいてん | unclear point; unclear points | |
| 不養生 | ふようじょう | neglect of health; intemperance | |
| 不穏当 | ふおんとう | improper; inappropriate; unjust; unfair | |
| 不衛生 | ふえいせい | unsanitary condition; lack of hygienic care; inattention to hygiene; unhygienic conditions | |
| 摩訶不思議 | まかふしぎ | profound mystery | |
| 不法行為 | ふほうこうい | tort; illegal act; illegal activity; offence | |
| 不世出 | ふせいしゅつ | rare; extraordinary; unparalleled; unparallelled | |
| 不飽和脂肪酸 | ふほうわしぼうさん | unsaturated fatty acid | |
| 不定休 | ふていきゅう | having no fixed days off; having no regular closing days; having no regular holidays | |
| 不善 | ふぜん | evil; sin; vice; mischief | |
| 不動尊 | ふどうそん | Acala (Wisdom King); Āryācalanātha; Fudō; fierce Buddhist deity | |
| 不格好 | ぶかっこう | unshapely; ill-formed; misshapen; awkward | |
| 心不全 | しんふぜん | heart failure | |
| 不即不離 | ふそくふり | neutral; noncommittal | |
| 不休 | ふきゅう | no rest; working nonstop | n2 |
| 不抜 | ふばつ | firm; steadfast; indomitable; unswerving | |
| 不妊治療 | ふにんちりょう | infertility treatment | |
| 不安感 | ふあんかん | uneasy feeling; sense of anxiety; malaise | |
| 門外不出 | もんがいふしゅつ | (treasuring something by) never taking (it) off the premises | |
| 不飽和 | ふほうわ | unsaturated | |
| 不徳義 | ふとくぎ | immorality; dishonesty | |
| 役不足 | やくぶそく | dissatisfaction with the work (role) given to one; feeling oneself above the given work (role); not up to the task; (being) out of one's depth | |
| 不倶戴天 | ふぐたいてん | cannot allow (oneself) to live (with someone) under the canopy of heaven; cannot allow (the sworn enemy) to live in this world; irreconcilable (enemy) | |
| 不評 | ふひょう | bad reputation; poor reception; unpopularity; disrepute | |
| 不評判 | ふひょうばん | bad reputation; poor reception; unpopularity; disrepute | |
| 不仁 | ふじん | heartlessness; inhumanity | n1 |
| 不縁 | ふえん | divorce; unrealized marriage prospects | |
| 不確実性 | ふかくじつせい | uncertainty; indeterminacy; unreliability; unauthenticity | |
| 不参 | ふさん | absence; nonattendance; nonappearance | |
| 不敏 | ふびん | slowness; inertness; inability; lack of talent | |
| 不粋 | ぶいき | vulgar; unrefined | |
| 不用品 | ふようひん | disused article | |
| 不才 | ふさい | lack of talent; incompetency; ineptitude; inability | n1 |
| 不信任 | ふしんにん | non-confidence; lack of confidence | |
| 不行儀 | ふぎょうぎ | bad manners; rudeness | |
| 不正行為 | ふせいこうい | unfair practices; wrongdoing; malpractice; cheating | |
| 半身不随 | はんしんふずい | hemiplegia (paralysis on one side of the body) | |
| 不惑 | ふわく | past forty; following right course | |
| 力不足 | ちからぶそく | lack of ability; inadequacy; (being) out of one's depth | |
| 不動産会社 | ふどうさんがいしゃ | real estate company; real estate firm; property firm | |
| 不必要 | ふひつよう | unnecessary; needless | n2 |
| 不感症 | ふかんしょう | sexual frigidity; insensitivity; indifference | |
| 不特定 | ふとくてい | unspecified; random; indefinite | |
| 不随 | ふずい | paralysis; palsy | n1 |
| 不消化 | ふしょうか | indigestion | |
| 不経済 | ふけいざい | poor economy; waste | |
| 不鮮明 | ふせんめい | blur; blurred; indistinct | |
| 不貞腐れる | ふてくされる | to become sulky; to become irresponsible (due to disgruntlement) | |
| 不日 | ふじつ | in a few days; at an early date | |
| 不発 | ふはつ | misfire | |
| 不可侵 | ふかしん | inviolability; nonaggression; sacredness | |
| 不倫相手 | ふりんあいて | person with whom one is having an illicit love affair; mistress; lover | |
| 不離 | ふり | inseparability | n3 |
| 不寝番 | ねずばん | sleepless vigil; night watch; vigilance | |
| 不成立 | ふせいりつ | failure (e.g. of a bill, motion); falling through; rejection; miscarriage | |
| 不祝儀 | ぶしゅうぎ | sad occasion (esp. a funeral) | |
| 難攻不落 | なんこうふらく | impregnable | |
| 不意討ち | ふいうち | surprise attack; surprise visit; catching a person off guard | |
| 不行届き | ふゆきとどき | negligence; carelessness; incompetence; mismanagement | |
| 不参加 | ふさんか | nonparticipation; nonattendance | |
| 不同意 | ふどうい | disagreement; disapproval; objection; dissent | |
| 不所存 | ふしょぞん | imprudence; indiscretion | |
| 不退転 | ふたいてん | determination; conviction | |
| 原因不明 | げんいんふめい | cause unknown | |
| 不起訴処分 | ふきそしょぶん | non-prosecution; decision not to prosecute; dropping of charges; disposition not to prosecute | |
| 不尽 | ふじん | I'll write again soon (closure for a letter, etc.); more anon; sincerely yours; yours truly | n1 |
| 不人気 | ふにんき | unpopular | n1 |
| 不成績 | ふせいせき | poor result; bad record; failure | |
| 不摂生 | ふせっせい | neglect of one's health; unhealthy living; intemperance | |
| 不正解 | ふせいかい | incorrect answer; wrong solution; incorrect interpretation | |
| 不特定多数 | ふとくていたすう | unspecified large number (of people) | |
| 不時着 | ふじちゃく | emergency landing; forced landing; crash landing | |
| 不風流 | ぶふうりゅう | unrefined; tasteless; inelegant; prosaic | |
| 消化不良 | しょうかふりょう | indigestion; dyspepsia; inability to understand; lacking comprehension | |
| 不均衡 | ふきんこう | imbalance; lack of balance; lopsidedness; disproportion | |
| 不夜城 | ふやじょう | nightless gay quarters; nightless city | |
| 不適合 | ふてきごう | non-conforming process; noncompliant; incompatible | |
| 出不精 | でぶしょう | stay-at-home; homebody | |
| 不連続 | ふれんぞく | discontinuous; discontinuous | |
| 水不足 | みずぶそく | water shortage; shortage of water supply | |
| 不動産業 | ふどうさんぎょう | real estate business | |
| 不帰 | ふき | returning no more (usu. of a person who has died); dying | |
| 不作為 | ふさくい | forbearance; omission; nonfeasance; inaction | |
| 不始末 | ふしまつ | omission; failure; incompleteness; irregularity | |
| 不安障害 | ふあんしょうがい | anxiety disorder | |
| 不凍港 | ふとうこう | ice-free port | n1 |
| 不味 | ふみ | distaste; unsavoriness; unsavouriness | |
| 不美人 | ふびじん | plain woman | |
| 口不調法 | くちぶちょうほう | inarticulate; clumsy with words; poor at speaking | |
| 不仲 | ふなか | discord; (on) bad terms (with) | |
| 不壊 | ふえ | indestructibility | |
| 不履行 | ふりこう | default; nonperformance | |
| 履行不能 | りこうふのう | unenforceability; impossibility of performance | |
| 不整 | ふせい | irregularity; unevenness; asymmetry; lack of uniformity | n1 |
| 不戦 | ふせん | war renunciation; anti-war; bout cancelled due to absence of one of the wrestlers | |
| 不様 | ぶざま | unsightly; ungraceful; clumsy; awkward | |
| 不学 | ふがく | unlearned; uneducated | |
| 不良品 | ふりょうひん | inferior goods; defective product; defective goods | |
| 不適当 | ふてきとう | inadequacy; inappropriateness; unfitness; impropriety | |
| 御不浄 | ごふじょう | bathroom; toilet (room) | |
| 不当解雇 | ふとうかいこ | unfair dismissal; wrongful dismissal; unfair termination | |
| 不軌 | ふき | lawlessness; violation of customs | |
| 不払い | ふばらい | nonpayment; default | |
| 不正出血 | ふせいしゅっけつ | metrorrhagia; abnormal vaginal bleeding | |
| 不急 | ふきゅう | in no hurry; nonessential (industry) | n2 |
| 不整合 | ふせいごう | inconsistency; mismatch; nonconformity; discordance | |
| 老少不定 | ろうしょうふてい | death comes to old and young alike; uncertainty of life | |
| 不規則動詞 | ふきそくどうし | irregular verb | |
| 不一 | ふいつ | Very sincerely yours; different | |
| 不入り | ふいり | small attendance; poor house | |
| 不許可 | ふきょか | not permitting; not authorizing | |
| 人材不足 | じんざいぶそく | shortage of talented people; shortfall in human resources | |
| 月経不順 | げっけいふじゅん | menstrual irregularity; irregular menstruation | |
| 準備不足 | じゅんびぶそく | ill-preparedness; insufficient preparation; lack of preparation | |
| 金剛不壊 | こんごうふえ | firm and solid; sturdy and indestructible; unshakable; adamantine | |
| 不幸せ | ふしあわせ | unhappiness; misfortune; ill luck | |
| 不立文字 | ふりゅうもんじ | Buddhist revelation through intuitive discernment; Spiritual awakening cannot be experienced with words and letters; Spiritual enlightenment can be attained only by means of communion of mind with mind (Zen Buddhism) | |
| 不敗 | ふはい | undefeated; unbeatable; invincible | n1 |
| 不可視 | ふかし | invisibility | |
| 不在者 | ふざいしゃ | absentee | |
| 不明者 | ふめいしゃ | missing person | |
| 不協和音 | ふきょうわおん | discord; dissonance; cacophony; discord (in a relationship) | |
| 不妊手術 | ふにんしゅじゅつ | sterilization (operation); sterilisation | |
| 去勢不安 | きょせいふあん | castration anxiety | |
| 常住不断 | じょうじゅうふだん | ceaseless; constant; uninterrupted | |
| 意味不明 | いみふめい | of uncertain meaning; ambiguous; cryptic; nonsensical | |
| 不同意性交等 | ふどういせいこうとう | non-consensual sexual intercourse | |
| 不確定 | ふかくてい | uncertain; indefinite | n1 |
| 不例 | ふれい | indisposition; sickness | |
| 不磨 | ふま | permanence; immortality | |
| 不可逆 | ふかぎゃく | irreversible | |
| 不妊症 | ふにんしょう | infertility; sterility; barrenness | |
| 不織布 | ふしょくふ | non-woven fabric | |
| 不開示 | ふかいじ | non-disclosure (of information) | |
| 意識不明 | いしきふめい | (state of) unconsciousness | |
| 不成 | ふなり | unpromoted (piece); limit orders that become market orders at the closing auction if not already executed | |
| 不定形 | ふていけい | indeterminate form; undefined; indefinite; unstructured | |
| 不定称 | ふていしょう | indefinite pronoun; general | |
| 不審者 | ふしんしゃ | suspicious person | |
| 不戦勝 | ふせんしょう | win by default; walkover | |
| 不死鳥 | ふしちょう | phoenix | |
| 過不及 | かふきゅう | excess or deficiency | |
| 免疫不全 | めんえきふぜん | immunodeficiency | |
| 血行不良 | けっこうふりょう | blood circulation failure | |
| 不堪 | ふかん | incompetence | n1 |
| 不燃 | ふねん | incombustibility | |
| 不採用 | ふさいよう | rejection (of an application) | |
| 不溶性 | ふようせい | insolubility | |
| 不確実 | ふかくじつ | uncertain; unreliable; inauthentic; insecure | |
| 不等式 | ふとうしき | inequality (expression) | |
| 不平不満 | ふへいふまん | discontent and grumbling | |
| 不言実行 | ふげんじっこう | action before words; work before talk | |
| 不連続線 | ふれんぞくせん | line of discontinuity; (weather) front | |
| 堅忍不抜 | けんにんふばつ | indomitable perseverance; invincible fortitude | |
| 不行き届き | ふゆきとどき | negligence; carelessness; incompetence; mismanagement | |
| 不ぞろい | ふぞろい | uneven; irregular; non-uniform; unsorted | n2 |
| 不均一 | ふきんいつ | lack of uniformity; unevenness; inequality; disproportion | |
| 不見転 | みずてん | acting on an impulse; doing something without considering the consequences; loose morals (e.g. of a geisha); easy virtue | |
| 不適任 | ふてきにん | unfitness; incompetency | |
| 順不同 | じゅんふどう | (listed in) no particular order; arbitrary order; random order | |
| 不安定化 | ふあんていか | destabilization; destabilisation | |
| 傲岸不遜 | ごうがんふそん | haughty arrogance | |
| 音信不通 | おんしんふつう | break in contact; not hearing from; having no communication with | |
| 不動産業者 | ふどうさんぎょうしゃ | real estate agent; realtor | |
| 行方不明者 | ゆくえふめいしゃ | missing person | |
| 不了見 | ふりょうけん | indiscretion; bad idea; thoughtlessness; indiscreetness | |
| 不労所得 | ふろうしょとく | unearned income; investment income; passive income | |
| 不動産屋 | ふどうさんや | real estate agent; realtor | |
| 不可能性 | ふかのうせい | impossibility | |
| 不可逆的 | ふかぎゃくてき | irreversible | |
| 不揮発性 | ふきはつせい | non-volatility | |
| 不良行為 | ふりょうこうい | delinquency; misdeed; misconduct; delinquent behavior | |
| 予測不能 | よそくふのう | unpredictable | |
| 使用不可 | しようふか | unavailable; disabled | |
| 情報不足 | じょうほうぶそく | lack of information; data deficiency | |
| 機能不全 | きのうふぜん | dysfunction; malfunction; insufficiency | |
| 不平等条約 | ふびょうどうじょうやく | unequal treaty | |
| 向き不向き | むきふむき | different suitabilities; being cut out for certain things (and not for others) | |
| 不等 | ふとう | inequality; disparity | n1 |
| ご不浄 | ごふじょう | bathroom; toilet (room) | |
| 不活発 | ふかっぱつ | dull; slow; sluggish; inactive | |
| 幸不幸 | こうふこう | fortune and misfortune; happiness and unhappiness; good and bad luck | |
| 不可知論 | ふかちろん | agnosticism | |
| 栄養不足 | えいようぶそく | malnutrition | |
| 不完全燃焼 | ふかんぜんねんしょう | incomplete combustion; imperfect combustion; being off one's game; not doing one's best | |
| 不買 | ふばい | not buying | |
| 不精髭 | ぶしょうひげ | stubble; unshaven face; beard one has because one is too lazy to shave; 5-o'clock shadow | |
| 不覚者 | ふかくもの | shallow thinker; indecisive person | |
| 腎不全 | じんふぜん | kidney failure; renal failure | |
| 一所不住 | いっしょふじゅう | vagrant; transient lifestyle | |
| 不偏不党 | ふへんふとう | impartiality; neutrality; independence | |
| 不法就労 | ふほうしゅうろう | illegal employment; illegal work; unauthorized labor | |
| 不良少年 | ふりょうしょうねん | juvenile delinquent | |
| 不透明感 | ふとうめいかん | sense of uncertainty; lack of clarity; indecisiveness | |
| 接触不良 | せっしょくふりょう | loose connection; bad contact | |
| 不干渉 | ふかんしょう | abstention; nonintervention; noninterference | |
| 不惜身命 | ふしゃくしんみょう | devoting one's body and soul to Buddhist teachings; unsparing devotion to Buddhism | |
| 不良少女 | ふりょうしょうじょ | bad girl; juvenile delinquent | |
| 労働力不足 | ろうどうりょくぶそく | labor shortage (labour) | |
| 不着 | ふちゃく | nonarrival; nondelivery | n1 |
| 不公正 | ふこうせい | injustice; unfairness | |
| 不正使用 | ふせいしよう | unauthorized use; misuse | |
| 不法投棄 | ふほうとうき | illegal dumping; fly-tipping | |
| 不出 | ふしゅつ | safekeeping; not going outside; not letting outside | |
| 不犯 | ふぼん | strict observance of the commandment that all priests should be celibate | |
| 不等割 | ふとうかつ | unequal cleavage (embryology) | |
| 不随意 | ふずいい | involuntary | |
| 不随意筋 | ふずいいきん | involuntary muscles | |
| 人間不信 | にんげんふしん | distrust of (other) human beings | |
| 分離不安 | ぶんりふあん | separation anxiety | |
| 不完全履行 | ふかんぜんりこう | defective performance; imperfect performance | |
| 不随意運動 | ふずいいうんどう | involuntary movement | |
| 欲求不満 | よっきゅうふまん | frustration | n1 |
| 不二家 | ふじや | Fujiya (Japanese confectionary maker) | |
| 不支持 | ふしじ | non-support; disapproval (e.g. in an opinion poll) | |
| 不足分 | ふそくぶん | shortage; amount outstanding (e.g. on loan); deficit | |
| 不在地主 | ふざいじぬし | absentee landlord | |
| 不法侵入 | ふほうしんにゅう | trespassing; intrusion | |
| 不買運動 | ふばいうんどう | boycott | |
| 発育不全 | はついくふぜん | underdevelopment; incomplete development; aplasia; hypoplasia | |
| 不偏 | ふへん | impartiality; neutrality; fairness | n1 |
| 不存在 | ふそんざい | non-existence; absence; lack | |
| 不定詞 | ふていし | infinitive | |
| 不渡り | ふわたり | dishonouring (a bill); dishonoring; bouncing (a cheque, check); non-payment | |
| 勃起不全 | ぼっきふぜん | erectile dysfunction; ED | |
| 天候不順 | てんこうふじゅん | unseasonable weather; fickle weather; bad weather | |
| 生理不順 | せいりふじゅん | menstrual irregularity; irregular periods | |
| 認識不足 | にんしきぶそく | lack of knowledge; lack of understanding | |
| 不可侵条約 | ふかしんじょうやく | non-aggression pact; non-aggression treaty | |
| 住友不動産 | すみともふどうさん | Sumitomo Realty and Development Co. Ltd. | |
| 情緒不安定 | じょうちょふあんてい | emotional instability | |
| 不文律 | ふぶんりつ | unwritten law; common law; unwritten rule | |
| 不明朗 | ふめいろう | gloominess; gloom; questionable; unfair | |
| 不適正 | ふてきせい | improper; inappropriate; illegitimate; unacceptable | |
| 不作法者 | ぶさほうもの | ill-mannered person; rude person; boor | |
| 不換紙幣 | ふかんしへい | inconvertible paper money; fiat money | |
| 不法滞在 | ふほうたいざい | illegal residence (in a country); illegal stay; illegal overstaying (of a visa) | |
| 不良債権 | ふりょうさいけん | bad debt; nonperforming loan | |
| 人員不足 | じんいんぶそく | staff shortage; personnel shortage | |
| 政情不安 | せいじょうふあん | the instability of a political situation; political instability | |
| 社会不安 | しゃかいふあん | social unrest; public anxiety | |
| 経験不足 | けいけんぶそく | lack of experience | |
| 不斉 | ふせい | irregularity; unevenness; asymmetry; lack of uniformity | n1 |
| 不動心 | ふどうしん | imperturbability; steadfastness; cool head in an emergency; keeping one's calm (e.g. during a fight) | |
| 不安げ | ふあんげ | uneasy | |
| 不安症 | ふあんしょう | anxiety disorder | |
| 不安視 | ふあんし | regarding with apprehension; viewing with anxiety | |
| 不等号 | ふとうごう | less-than sign or greater-than sign (< or >); inequality sign | |
| 不合格者 | ふごうかくしゃ | unsuccessful candidate; rejected person | |
| 供給不足 | きょうきゅうぶそく | short supply; supply shortage | |
| 呼吸不全 | こきゅうふぜん | respiratory failure | |
| 素行不良 | そこうふりょう | bad behavior; misbehavior | |
| 電力不足 | でんりょくぶそく | electricity shortage | |
| 食糧不足 | しょくりょうぶそく | food shortage | |
| 不動産業界 | ふどうさんぎょうかい | real estate world; property market | |
| 不倒 | ふとう | impossible to knock over; unbeatable; indestructible | n1 |
| 不凍 | ふとう | ice-free; anti-freeze | n1 |
| 不納 | ふのう | non-payment; default | n1 |
| 不宣 | ふせん | I'll write again soon; more anon; sincerely yours; yours truly | |
| 不二山 | ふじさん | Mount Fuji; Mt. Fuji; Fujiyama; Fuji-san | |
| 不均等 | ふきんとう | lack of uniformity; unevenness; imbalance; inequality | |
| 不応期 | ふおうき | refractory period | |
| 不愛想 | ぶあいそう | unsociable; unfriendly; blunt; surly | |
| 不採算 | ふさいさん | unprofitability | |
| 不束者 | ふつつかもの | inexperienced person; incompetent person; ignoramus | |
| 不要物 | ふようぶつ | refuse; waste material | |
| 不貞寝 | ふてね | sulking in bed; going to bed in a huff | |
| 不撓不屈 | ふとうふくつ | tenacity; indomitableness; dauntlessness; inflexibility | |
| 不買同盟 | ふばいどうめい | boycott; buyer's strike | |
| 分不相応 | ぶんふそうおう | beyond one's means or position | |
| 大胆不敵 | だいたんふてき | daring; fearless; audacious; bold | |
| 成績不振 | せいせきふしん | poor (academic) performance; poor (business) results (showing) | |
| 材料不足 | ざいりょうぶそく | materials shortage | |
| 百折不撓 | ひゃくせつふとう | indefatigability; indomitableness | |
| 経営不振 | けいえいふしん | business slump; slowdown in business activity | |
| 視界不良 | しかいふりょう | poor visibility | |
| 不定方程式 | ふていほうていしき | indeterminate equation | |
| 不朽の名作 | ふきゅうのめいさく | timeless masterpiece; immortal work | |
| 不確定要素 | ふかくていようそ | variables; uncertain elements; uncertainties; imponderables | |
| 不飽和結合 | ふほうわけつごう | unsaturated bond | |
| 東急不動産 | とうきゅうふどうさん | Tokyu Land Corporation | |
| 不正アクセス | ふせいアクセス | unauthorized (computer) access; hacking | |
| 不食 | ふしょく | fasting | n1 |
| 不淫 | ふいん | celibacy; chastity | |