不潔

ふけつ

unclean, dirty

JLPT N2

Character Breakdown

Meaning and Usage

"不潔" (ふけつ) means "unclean" or "dirty," often used to describe physical cleanliness or hygiene. It is a formal or neutral term and can apply to places, objects, or even behaviors that are considered unhygienic.

Common Contexts

You will often hear "不潔" in contexts related to health, cleanliness, and hygiene, such as describing a dirty room, unwashed hands, or unsanitary conditions.

Collocations and Patterns

  • 不潔な手 (ふけつなて): unclean hands — commonly used when emphasizing hygiene, especially before eating.
  • 不潔な環境 (ふけつなかんきょう): unclean environment — used in health or sanitation discussions.
  • 不潔な場所 (ふけつなばしょ): dirty place — describing a location that is not clean.

Register and Nuance

"不潔" is a somewhat formal word, suitable for written and spoken Japanese in health, medical, or formal everyday contexts. It is less casual than words like "汚い" (きたない), which also means dirty but is more colloquial.

Common Mistakes

Learners sometimes confuse "不潔" with "汚い". While both mean dirty, "不潔" emphasizes hygiene and cleanliness from a health perspective, whereas "汚い" is more general and can refer to messiness or moral impurity. Use "不潔" when focusing on cleanliness and hygiene.

Example Sentences

かれのへやはいつもふけつで、そうじをしない。

His room is always unclean and he doesn't clean it.

ふけつなてでたべものをさわるのはやめてください。

Please stop touching food with unclean hands.

ふけつなかんきょうはびょうきのげんいんになることがおおい。

An unclean environment often causes illness.