不衛生(ふえいせい)

ふえいせい
noun, na-adjective
unsanitary; unhygienic
1. unsanitary; unhygienic; unclean
The state of not meeting standards of cleanliness or hygiene. Describes conditions or practices that could be harmful to health.
不衛生(ふえいせい)な環境(かんきょう)で暮(く)らしている。
They are living in unsanitary conditions.
手(て)を洗(あら)わないのは不衛生(ふえいせい)だ。
Not washing your hands is unhygienic.
不衛生(ふえいせい)な調理場(ちょうりば)が保健所(ほけんじょ)に指摘(してき)され、営業停止(えいぎょうていし)になった。
The unsanitary kitchen was flagged by the health center, and the business was shut down.

不衛生(ふえいせい) describes conditions or practices that fail to meet hygiene standards and could harm health. Functions as both a noun and na-adjective.

WORD FORMATION:
不(ふ) (non-/un-) + 衛生(えいせい) (hygiene, sanitation)

COMMON COLLOCATIONS:

  • 不衛生(ふえいせい)な環境(かんきょう): unsanitary environment
  • 不衛生(ふえいせい)な状態(じょうたい): unsanitary conditions
  • 不衛生(ふえいせい)な食品(しょくひん): unsanitary food
  • 不衛生(ふえいせい)な調理場(ちょうりば): unsanitary kitchen

CONTRAST:

  • 衛生的(えいせいてき): hygienic, sanitary (positive counterpart, na-adjective)
  • 衛生(えいせい): hygiene, sanitation (noun base)

USAGE:
Often appears in health inspections, news about food safety, and public health contexts. The 不(ふ)〜 prefix pattern is productive: 不安定(ふあんてい) (unstable), 不十分(ふじゅうぶん) (insufficient).

general
Added 2026.3.14 15:28 · Revised 2026.3.29 14:39
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