汚い・穢い|きたないkitanai[3]nakadaka (mid-high)

JLPT N5approx.Common
Which spelling to use
汚い汚い(きたない) is the most common form, written with kanji and kana, and is the default choice for beginners in ordinary writing.
穢い穢い(きたない) is a rarely used form written with kanji and kana, so you will seldom see it. Beginners should normally use 汚い(きたない) instead.
Definitions
  1. i-adjectivedirty; filthy; foul; unclean
  2. i-adjectivedisordered; messy; untidy; poor (e.g. handwriting)
  3. i-adjectiveindecent (language, etc.); dirty; vulgar; coarse
  4. i-adjectivedastardly; mean; base; underhanded
    ジャックは私に汚きたないいたずらをした。↗
    Jack played a dirty trick on me.
  5. i-adjectivestingy; greedy
Conjugation
Plain form汚い(きたない)
Polite (desu)汚いです(きたないです)
Negative (kunai)汚くない(きたなくない)
polite (ku arimasen)汚くありません(きたなくありません)
Past (katta)汚かった(きたなかった)
Past negative (kunakatta)汚くなかった(きたなくなかった)
Te form (kute)汚くて(きたなくて)
Adverbial (ku)汚く(きたなく)
Conditional (kereba)汚ければ(きたなければ)
kattara汚かったら(きたなかったら)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym不潔ふけつWrittenWritten/formal prose. Unhygienic or unsanitary; can also imply improper relations between men and women.
  • Synonym不衛生ふえいせいWrittenWritten/formal prose. Poor hygiene or sanitation — 「不衛生な環境」 — said of living conditions, toilets, food; not general dirt.
  • Synonym薄汚いうすぎたないCasualColloquial. Suggests something looks dingy and grimy rather than outright dirty — 「薄汚い服」. 「汚い」 covers dirt and mess of any kind.
  • SynonymダーティーCasualColloquial loanword, used mostly for dirty in the sense of underhand or disreputable — 「ダーティーなイメージ」.
  • Synonym汚らしいきたならしいCasualColloquial. Filthy-looking and off-putting; stronger than 「汚い」 in stressing that something disgusts you.
  • Related汚らわしいけがらわしいWrittenWritten/formal prose. So filthy it repels you, with the stress on the moral or spiritual side, deserving contempt — 「汚らわしい金」.
  • Relatedむさ苦しいむさくるしいCasualColloquial. A room or one's dress is scruffy and slovenly; also used humbly of one's own home, as in 「むさ苦しい所ですが」.
  • RelatedむさいCasualColloquial and rather rough. Scruffy, unkempt, unwashed — said mostly of a man's appearance.
  • Antonym清いきよいWrittenWritten/formal prose and the direct opposite of 「汚い」: clear and pure, also of a pure heart or clean dealings.
  • AntonymきれいNeutralNeutral and the everyday opposite of 「汚い」: clean and tidy, and by extension pretty or lovely.

For dirt or mess in general, 「汚い」 is the default. Use 「薄汚い」 for a dingy, grimy look, 「不潔」 or 「不衛生」 for unhygienic conditions, 「汚らわしい」 for moral filth, and 「むさ苦しい」 for scruffy rooms or dress. The opposite of 「汚い」 is 「綺麗」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese definitions
  1. 汚よごれている。濁にごっている。不潔ふけつである。
  2. 乱雑らんざつである。整ととのっていない。
  3. 言葉遣ことばづかいが乱暴らんぼうだ。野卑やひだ。下品げひんだ。
  4. 他人たにんの立場たちばを軽かろんじている。卑劣ひれつだ。ずるい。
  5. 強欲ごうよくである。いやしい。あこぎだ。
Kanji in this word
English equivalents
See also

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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