How to say "shady" in Japanese

• 怪しいあやしいJLPT N2approx.Common
  i-adjectiveYour best choice when shady means suspicious, dubious, or dodgy: a person whose behavior seems off, a deal that looks questionable, or a place that makes you uneasy. It conveys distrust, not proof.
  みんな奴やつは怪あやしいと思おもっている。↗

  We are all suspicious about him.
• 曖昧あいまいJLPT N2approx.Common
  na-adjective, nounIt can gloss shady as disreputable, but its core meaning is vague or ambiguous, so it is seldom the word you actually want when calling something shady.
• きわどいCommon
  i-adjectiveCovers shady only in the risqué sense: remarks or content bordering on the indecent, or a delicate question. Not for suspicious people or dubious dealings; usually written in kana.
• アングラCommon
  prenominal modifierCovers shady in the sense of underground or illicit: the underground economy or press, unofficial activity, black money. It points to activity outside official channels rather than to personal dishonesty.

Choose 「怪しい」 for suspicious or dodgy people and dealings, 「きわどい」 for risqué or borderline content, 「アングラ」 for underground or illicit activity, and treat 曖昧 with caution, as it chiefly means vague or ambiguous.

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

• 怪しいあやしいsuspicious
• 後ろ暗いうしろぐらいshady
• 小暗いおぐらいdusky
• 胡散臭いうさんくさいsuspicious-looking
• 曖昧あいまいshady
• きわどいsuggestive
• アングラunderground (economy, press, etc.)
• ノワールdark
• きな臭いきなくさいsuspicious
• アンダーグラウンドunderground (economy, press, etc.)
• 危ないあぶないsketchy