Seeming suspicious or shady; causing distrust or doubt about someone's motives or an object's legitimacy.
あの男の行動は怪しい。警察に連絡しようか。
That man's behavior is suspicious. Should we call the police?
ネットの広告は怪しい商品が多いから気をつけて。
Be careful—there are a lot of shady products in online ads.
彼の説明はどこか怪しくて、納得できない。
His explanation feels dubious somehow; I can't be convinced.
Doubtful or unlikely; not convincing or plausible; something that probably won't happen or be true.
明日の天気が怪しいので、遠足は中止になるかもしれない。
The weather for tomorrow looks iffy, so the excursion might be cancelled.
彼が時間通りに来るとは怪しいよ。
I doubt he'll arrive on time.
その話は本当だとは怪しいので、確認したほうがいい。
That story seems unlikely to be true, so it's better to check.
Untrustworthy or unreliable; of poor quality or clumsy performance—something or someone you cannot depend on.
その時計はすぐ止まってしまい、かなり怪しい。
That watch stops easily; it's pretty unreliable.
彼の仕事ぶりは怪しいから、大事な案件は任せられない。
His work is unreliable, so I can't entrust him with an important case.
怪しい機械を信用してはいけない。
Don't trust a dodgy machine.
Strange, eerie, or uncanny; giving an odd or creepy impression.
山道で怪しい音が聞こえてきた。
I heard a strange sound on the mountain path.
あの廃屋は夜見ると怪しい雰囲気がある。
That abandoned house has an eerie atmosphere at night.
彼女は怪しい笑みを浮かべた。
She gave a strange/sinister smile.
Ominous or threatening; suggesting potential danger or an unsettled, risky situation (often used for weather, finances, etc.).
今の経済状況は怪しいので投資は慎重にしたほうがいい。
The current economic situation is precarious, so be cautious about investments.
空が不穏で、夕方から怪しい天気になりそうだ。
The sky looks ominous; the weather will probably turn bad this evening.
Suspicious regarding a possible romantic affair; suspecting someone's unfaithfulness or hidden relationship.
最近、彼女の帰りが遅いので彼は怪しいと思い始めた。
Lately she's been coming home late, so he started to find her behavior suspicious.
メッセージの履歴を見て、夫は妻の行動を怪しいと感じた。
After checking message history, the husband suspected his wife's behavior.
Mysterious, bewitching, or alluring; having an enchanting, otherworldly charm (also written 妖しい).
その歌手には怪しい魅力があって、多くの人を惹きつける。
That singer has a mysterious charm that attracts many people.
彼女は怪しい美しさを持っている。
She possesses a strangely alluring beauty.