清潔|せいけつseiketsu[0]heiban (flat)

1. na-adjective, nounclean; hygienic; sanitary
   その別荘べっそうは清潔せいけつで整然せいぜんとしていた。↗

   The cottage was clean and tidy.
2. na-adjective, nounpure; virtuous; immaculate

• Synonym清らかきよらかWrittenWritten word for something clear and pure with an aesthetic feel, as in 「清らかな心」; literary in tone, not about everyday hygiene.
• SynonymクリーンNeutralLoanword covering both physical cleanliness and honesty, as in 「クリーンな政治」 or 「クリーンエネルギー」.
• Synonym清浄せいじょうWrittenWritten word for clean and free of pollution, as in 「空気清浄機」; more at home in formal prose than 「清潔」.
• Synonym清いきよいNeutralAdjective for clear and pure, as in 「清い水」 or 「清い心」; leans toward written style.
• SynonymきれいNeutralThe everyday word for clean or pretty; 「清潔」 specifically stresses hygiene and being free of dirt.
• Synonym穢れのないけがれのないWrittenLiterary phrase for pure and untainted, typically describing a person's heart or a young girl; poetic in flavor.
• Related純粋じゅんすいNeutralMeans pure in the sense of unmixed or innocent, as in 「純粋な気持ち」; about lacking impurities, not about hygiene.
• Related潔白けっぱくWrittenWritten word for being innocent and blameless, as in 「身の潔白を証明する」; about conduct, not physical cleanliness.
• Related清廉せいれんWrittenWritten word for honest and free of selfish desire, as in 「清廉潔白」; used of officials and personal conduct.
• Related廉潔れんけつWrittenWritten word for honest, upright conduct with nothing to hide; rare in modern Japanese.
• Related小奇麗こぎれいNeutralMeans neat and tidy, as in 「小奇麗な部屋」; a milder degree of cleanliness than 「清潔」.
• Related身奇麗みぎれいNeutralCovers only a person's neat, well-groomed appearance — clothes and hair — not rooms or objects.
• Related小さっぱりしたこさっぱりしたCasualColloquial way to say neat and fresh-looking, mostly for clothing or rooms.
• Related純潔じゅんけつWrittenWritten word for purity, above all sexual chastity — having no relations between men and women.
• Antonym不潔ふけつNeutralThe direct antonym of 「清潔」: unhygienic and dirty.
• Antonym汚いきたないNeutralCommon colloquial word for dirty, the opposite of 「清潔」; can also mean underhanded.

Use 「清潔」 for hygiene and freedom from dirt; in casual speech 「綺麗」 is the everyday choice. For an upright character pick 「潔白」 or 「清廉」, for a pure heart 「清らか」, and for a neat appearance 「身奇麗」. For dirty, use 「不潔」 or 「汚い」.

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

1. よごれのないこと。衛生的えいせいてきなこと。
2. 人格じんかくや品行ひんこうが清きよいこと。