怪しい|あやしいayashii[0]heiban (flat)

1. i-adjectivesuspicious; dubious; questionable; dodgy; shady; fishy
   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.
2. i-adjectivedoubtful; unsure; uncertain; unlikely; implausible
   彼かれが時間じかんどおりに来くるかどうかは私は怪あやしいと思おもう。↗

   I question whether he'll come in time.
3. i-adjectiveuntrustworthy; unreliable; clumsy; awkward; shaky; poor
4. i-adjectivestrange; weird; eerie; spooky; uncanny
   その怪あやしい女性じょせいは、魔女まじょと考かんがえられた。↗

   The strange-looking woman was thought to be a witch.
5. i-adjectiveominous (e.g. weather); threatening; dangerous (e.g. financial situation); uncertain
   空模様そらもようが怪あやしい。↗

   The sky looks angry.

   空そらが怪あやしい。雨あめが降ふるかな。↗

   The sky looks ominous. I wonder if it will rain.
6. i-adjectivesuspicious (of a potential amorous relation)
   ジャネットとデイブがあやしいという噂うわさが流ながれた。↗

   Word got around that Jeanette and Dave were having an affair.
7. i-adjectivemysterious; bewitching; alluring; enticing; enchantingalso 妖しい

• Synonym疑わしいうたがわしいNeutralFor things open to doubt or hard to verify as true or false; a more rational judgement. 「怪しい」 carries an intuitive, gut-feeling sense of suspicion.
• Synonym怪しげあやしげNeutralSays something gives off a suspicious air — looks, stories, deals; 「怪しい」 is more direct.
• Synonym不審ふしんNeutralSuspicion or something unclear, as in 「不審者」; rather formal, while 「怪しい」 is more colloquial.
• SynonymいかがわしいNeutralCovers suspicious or unreliable things, but also indecent, sleazy ones, as in 「いかがわしい店」; 「怪しい」 does not necessarily imply something indecent.
• Synonym胡散臭いうさんくさいNeutralDescribes suspicious behaviour, stories or deals that inspire distrust, as in 「胡散臭い話」; carries stronger distaste than 「怪しい」.
• Synonymきな臭いきなくさいNeutralLiterally a burnt or gunpowder smell; describes tense situations or signs of something fishy. 「怪しい」 is broader.
• Related曖昧あいまいNeutralFor vague, ambiguous things left unclear; 「怪しい」 focuses on suspicion.
• Related不確かふたしかNeutralFor uncertain, unreliable things, in a fairly objective way; 「怪しい」 carries a tinge of suspicion.
• RelatedあやふやNeutralFor hazy, uncertain states such as fuzzy memories; 「怪しい」 focuses on suspicion.
• Related危ういあやういWrittenA written word for danger or a precarious state. 「怪しい」 can also describe threatening weather or an unpromising outlook.
• Related危なっかしいあぶなっかしいNeutralDescribes things that look dangerously unsteady to an observer, like a child walking shakily.
• Related訝しいいぶかしいWrittenA written word for something that puzzles you or seems doubtful. 「怪しい」 is more colloquial.
• RelatedおぼつかないNeutralMeans unsteady or unreliable, lacking a firm grasp, as in 「足元がおぼつかない」; stresses instability.
• Related心もとないこころもとないNeutralFor feeling anxious and unsure, with nothing to rely on; stresses subjective unease.
• Related妖しいあやしいWrittenSame reading, different kanji: a written word for mysterious, bewitching allure, as in 「妖しい魅力」.
• Antonym確かたしかNeutralAntonym: sure, certain and reliable — the opposite of the suspicious 「怪しい」.
• Antonym明らかあきらかNeutralAntonym: clear and evident — the opposite of 「怪しい」 when the truth is unclear.
• Antonym信頼できるNeutralAntonym: trustworthy — the opposite of the unreliable 「怪しい」.

Use 「怪しい」 for anything suspicious, unreliable or looking unpromising. For rational doubt about whether something is true, say 「疑わしい」; for shady behaviour, stories or deals that put you off, 「胡散臭い」; for something suspicious or indecent, 「いかがわしい」; a suspicious person is 「不審者」. For vagueness pick 「曖昧」 or 「あやふや」, for unsteadiness 「覚束ない」 or 「危なっかしい」, for danger 「危うい」, and for bewitching allure 「妖しい」.

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

1. （怪あやしい）おかしい。普通ふつうじゃない。何なんか秘密ひみつを持もってそうな。
2. （怪あやしい）なにか悪わるいことのありそうな。気味きみの悪わるい。
3. （怪あやしい）どうやら真実しんじつでなさそう。真偽しんぎのはっきりしない。信用しんようならない。後ろ暗うしろぐらそうな。
4. （妖あやしい）神秘的しんぴてきな。不思議ふしぎと魅力的みりょくてきな。魔力まりょくのような。