How to say "suspicious" in Japanese

Choosing the right word
  • 怪しいあやしいJLPT N2approx.Common
    i-adjectiveCovers 'suspicious' in the sense of seeming untrustworthy or shady — a person, behavior, or deal that makes you wary; also dubious, questionable, or dodgy things.
    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.
  • 怪しげあやしげCommon
    na-adjective, nounDescribes something that gives a suspicious or dubious impression — a look, manner, or scheme that seems questionable. It points to the suspicious air something gives off, the 'suspicious-looking' feel.
    怪あやしげな手てつきで彼女かのじょはグラスを運はこんできた。↗
    She fumbled with the glasses as she brought them in.
  • 変へんJLPT N4approx.Common
    na-adjectiveReally means strange, odd, or weird; its link to 'suspicious' is loose — something that seems off or not right. Seldom the word you want for a shady or untrustworthy person or scheme.
    そのオレンジは後味あとあじが変へんだった。↗
    The orange left a strange taste in my mouth.
  • 疑わしいうたがわしいCommon
    i-adjectiveCovers 'suspicious' as doubtful or questionable: the truth, reliability, or validity of something is in doubt, as with a claim, story, or explanation that seems uncertain or disputable.
    彼かれが時間じかんどおり来くるかどうかは疑うたがわしいと思おもう。↗
    I doubt if he will come on time.
  • 臭いくさいJLPT N3approx.Common
    i-adjectiveThe 'fishy' sense of suspicious: a story, excuse, or arrangement that seems off, as if something about it stinks. Figurative, echoing the literal smell meaning of the word.
    あいつが臭くさい。↗
    He looks suspicious.

Use 「怪しい」 for people or things that seem untrustworthy, 「怪しげ」 for a suspicious look or air, 「疑わしい」 for doubtful claims, 「臭い」 for fishy situations, and 変 when something is simply strange or odd rather than shady.

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

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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