| 汚い | きたない | dirty; filthy; foul; unclean | n5 |
| 汚れる | よごれる | to get dirty; to become dirty; to become sullied; to become corrupted | n4 |
| 汚れ | よごれ | dirt; filth; stain; blot | n3 |
| 汚す | よごす | to pollute; to contaminate; to soil; to make dirty | n3 |
| 汚染 | おせん | pollution; contamination | n2 |
| 汚点 | おてん | stain; blot; flaw; disgrace | |
| 薄汚い | うすぎたない | filthy; dirty (looking); drab | |
| 汚名 | おめい | bad name; bad reputation; disgrace; dishonour | n1 |
| 汚らしい | きたならしい | dirty-looking; filthy; disgusting; squalid | |
| 汚物 | おぶつ | filth (esp. excrement, feces, urine); muck; waste; garbage | |
| 汚辱 | おじょく | disgrace; humiliation; insult | |
| 汚らわしい | けがらわしい | filthy; unfair; dirty; untouchable | |
| 汚穢 | おわい | night soil; muck; filth; dirt | |
| 口汚い | くちぎたない | foul-mouthed; foul (language); abusive; greedy | |
| 汚水 | おすい | filthy water; sewage | |
| 小汚い | こぎたない | somehow dirty; slightly dirty; dingy; somewhat base | |
| 汚職 | おしょく | corruption (esp. by a government employee); bribery; graft | n1 |
| 汚濁 | おだく | pollution; contamination; corruption; graft | |
| 汚泥 | おでい | sludge; slime; dregs; mire | |
| 面汚し | つらよごし | disgrace; shame | |
| 意地汚い | いじきたない | gluttonous; greedy | |
| 大気汚染 | たいきおせん | air pollution | |
| 汚損 | おそん | staining; spoiling; soiling; defacing | |
| 環境汚染 | かんきょうおせん | environmental pollution | |
| 汚行 | おこう | scandalous conduct; shameful behavior | |
| 汚吏 | おり | corrupt official | n1 |
| 海洋汚染 | かいようおせん | marine pollution; oceanic pollution; sea pollution | |
| 汚れ物 | よごれもの | dirty things (dishes, laundry, etc.) | |
| 土壌汚染 | どじょうおせん | soil pollution | |
| 汚染物質 | おせんぶっしつ | pollutant; contaminant | |
| 汚臭 | おしゅう | foul smell | |
| 水質汚濁 | すいしつおだく | water pollution | |
| 水質汚染 | すいしつおせん | water pollution | |
| 汚水処理 | おすいしょり | sewage disposal; sewage treatment | |
| 汚名返上 | おめいへんじょう | clearing one's name; redeeming oneself; restoring one's honor | |
| 放射能汚染 | ほうしゃのうおせん | radioactive contamination | |
| 口汚し | くちよごし | tantalizing sample (of food); tantalising sample (of food) | |
| 汚れ役 | よごれやく | role of a villain (film, drama, etc.); bad-guy role; social outcast role | |
| 汚染者 | おせんしゃ | polluter | |
| 汚染源 | おせんげん | source of pollution | |
| 汚染菌 | おせんきん | (bacterial) contaminant; pollutant | |
| 熱汚染 | ねつおせん | thermal pollution | |
| 汚ない | きたない | dirty; filthy; foul; unclean | n5 |
| 汚 | よごれ | oceanic whitetip shark (Carcharhinus longimanus) | n3 |
| 汚し | よごし | soiling; polluting; being dirty; shame | |
| 汚る | けがる | to be violated; to be corrupted; to be polluted; to be stained | |
| 汚涜 | おとく | blasphemy; desecration | |
| 汚液 | おえき | dirty liquid; filthy liquid; foul liquid | |
| 汚言 | おげん | frequently uttering obscene words or socially inappropriate remarks | |
| 汚鮫 | よごれざめ | oceanic whitetip shark (Carcharhinus longimanus) | |
| 貪汚 | たんお | greed; corruption | |
| 防汚 | ぼうお | antifouling; stain resistance; stain-proofing; anti-soiling | |
| 寝汚い | いぎたない | sound asleep; fast asleep; untidy; slovenly | |
| 汚染水 | おせんすい | contaminated water; polluted water; dirty water | |
| 汚破損 | おはそん | staining; spoiling; soiling; defacing | |
| 汚穢屋 | おわいや | person who gathers night soil | |
| 汚言症 | おげんしょう | coprolalia; uncontrollable use of obscene language | |
| 汚部屋 | おべや | messy room; dirty room; unclean room | |
| 油汚れ | あぶらよごれ | oil stain; grease stain | |
| 脂汚れ | あぶらよごれ | oil stain; grease stain | |
| 腹汚い | はらぎたない | black-hearted; nasty | |
| 防汚剤 | ぼうおざい | antifoulant; antifouling | |
| 顔汚し | かおよごし | a disgrace or dishonor (dishonour) | |
| 化学汚染 | かがくおせん | chemical pollution | |
| 口汚ない | くちぎたない | foul-mouthed; foul (language); abusive; greedy | |
| 名を汚す | なをけがす | to shame the name (of); to blot the reputation (of) | |
| 手を汚す | てをよごす | to dirty one's hands | |
| 政治汚職 | せいじおしょく | political corruption | |
| 服を汚す | ふくをよごす | to soil one's clothes | |
| 構造汚職 | こうぞうおしょく | structural corruption | |
| 汚い戦争 | きたないせんそう | Dirty War (period of state terrorism in Argentina; 1976-1983) | |
| 汚い爆弾 | きたないばくだん | dirty bomb; radiological dispersal device | |
| 汚っさん | おっさん | dirty old man | |
| 汚れた心 | けがれたこころ | Dirty Hearts (2011 film) | |
| 汚れた手 | よごれたて | Dirty Hands (1948 play by Jean-Paul Sartre) | |
| 汚れた金 | よごれたかね | dirty money | |
| 汚れもの | よごれもの | dirty things (dishes, laundry, etc.) | |
| 汚れ仕事 | よごれしごと | dirty work; unpleasant task | |
| 汚れ防止 | よごれぼうし | contamination prevention; stainproofing | |
| 汚ギャル | おギャル | unhygienic young woman; dirty girl | |
| 汚ッサン | おっさん | dirty old man | |
| 汚染除去 | おせんじょきょ | decontamination | |
| 汚水だめ | おすいだめ | cesspit; cesspool | |
| 汚水溜め | おすいだめ | cesspit; cesspool | |
| 汚物入れ | おぶついれ | sanitary waste receptacle; sanitary napkin disposal bin (in a bathroom); fecal specimen receptacle (at a hospital) | |
| 汚職撲滅 | おしょくぼくめつ | eradication of corruption | |
| 汚職疑惑 | おしょくぎわく | suspicion of corruption | |
| 汚職警官 | おしょくけいかん | corrupt policeman; dirty cop | |
| 活性汚泥 | かっせいおでい | activated sludge | |
| 空気汚染 | くうきおせん | air pollution | |
| 薄汚ない | うすぎたない | filthy; dirty (looking); drab | |
| 薄汚れる | うすよごれる | to get slightly dirty (all over) | |
| 複合汚染 | ふくごうおせん | multiple contamination | |
| 貪官汚吏 | たんかんおり | corrupt government official | |
| 金に汚い | かねにきたない | mean (greedy) about money; stingy | |
| 防汚塗料 | ぼうおとりょう | antifouling paint | |
| 食べ汚す | たべよごす | to eat messily | |
| あぶら汚れ | あぶらよごれ | oil stain; grease stain | |
| 位牌を汚す | いはいをけがす | to disgrace one's ancestors; to tarnish the honour of one's ancestors | |
| 光化学汚染 | こうかがくおせん | photochemical pollution | |
| 公共物汚損 | こうきょうぶつおそん | vandalism | |
| 名声を汚す | めいせいをけがす | to defile one's reputation; to besmirch one's name | |
| 意地汚ない | いじきたない | gluttonous; greedy | |
| 晩節を汚す | ばんせつをけがす | to ruin one's reputation in later life; to tarnish one's twilight years | |
| 末席を汚す | まっせきをけがす | to have the honour of being present (at a meeting, etc.); to have the honour of being a member (of a society, etc.); to soil the lowest seat by one's presence | |
| 汚いやり方 | きたないやりかた | dirty trick | |
| 汚れのない | けがれのない | pure; clean; untouched; innocent | |
| 汚れの無い | けがれのない | pure; clean; untouched; innocent | |
| 汚れ落とし | よごれおとし | getting stains out; getting rid of stains | |
| 汚名を濯ぐ | おめいをそそぐ | to clear one's name | |
| 汚名を雪ぐ | おめいをそそぐ | to clear one's name | |
| 汚染レベル | おせんレベル | contamination level | |
| 汚職政治家 | おしょくせいじか | corrupt politician | |
| 遺伝子汚染 | いでんしおせん | genetic pollution | |
| データの汚染 | データのおせん | data corruption; data contamination | |
| 化学汚染災害 | かがくおせんさいがい | chemical contamination disaster | |
| 有機汚染物質 | ゆうきおせんぶっしつ | organic pollutant | |
| 汚い手を使う | きたないてをつかう | to play a dirty trick; to use underhanded methods; to hit below the belt; to play false | |
| 汚名をすすぐ | おめいをそそぐ | to clear one's name | |
| 汚名をそそぐ | おめいをそそぐ | to clear one's name | |
| サジェスト汚染 | サジェストおせん | manipulation of search engine suggestions with unwanted keywords | |
| 万能汚れ落とし | ばんのうよごれおとし | all-purpose cleaner | |
| 土壌汚染対策法 | どじょうおせんたいさくほう | Soil Contamination Countermeasures Act | |
| 大気汚染防止法 | たいきおせんぼうしほう | Air Pollution Control Act | |
| 水質汚濁防止法 | すいしつおだくぼうしほう | Water Pollution Prevention Act | |
| 汚れを知らない | けがれをしらない | innocent (e.g. child); pure (e.g. heart) | |
| 汚染者負担原則 | おせんしゃふたんげんそく | Polluter Pays Principle; PPP | |
| ダイオキシン汚染 | ダイオキシンおせん | dioxin contamination | |
| 残留性有機汚染物質 | ざんりゅうせいゆうきおせんぶっしつ | persistent organic pollutant; POP | |
| 見るのも汚らわしい | みるのもけがらわしい | detestable to look at | |
| 指汚しとて切られもせず | ゆびきたなしとてきられもせず | it's hard to cut one's ties to close relatives even if they are wicked; you don't cut your finger off just because it's dirty | |
| 指汚しとて、切られもせず | ゆびきたなしとてきられもせず | it's hard to cut one's ties to close relatives even if they are wicked; you don't cut your finger off just because it's dirty | |