suspicious

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adjective

Definition of SUSPICIOUS

1

giving good reason for being doubted, questioned, or challenged <suspicious claims of being the rightful owner of the property>

Synonyms debatable, disputable, dodgy [chiefly British], doubtable, dubious, dubitable, equivocal, fishy, problematic (also problematical), queer, questionable, shady, shaky, suspect, suspicious

Related Words alleged, so-called, supposed; moot; ambiguous, open, unclear; uncertain, undecided, undetermined; far-fetched, flimsy, improbable, unlikely, weak

Near Antonyms decisive, definitive; clear, obvious, open-and-shut, positive

Antonyms certain, hands-down, incontestable, indisputable, indubitable, questionless, sure, undeniable, undoubted, unproblematic, unquestionable

2

inclined to doubt or question claims <suspicious of any menu dish having a name she can't pronounce>

Synonyms disbelieving, distrustful, doubting, incredulous, mistrustful, negativistic, questioning, show-me, suspecting, suspicious, unbelieving

Related Words paranoid (also paranoidal); critical, puzzled, quizzical; careful, cautious, guarded, gun-shy, leery (also leary), wary, watchful; cynical, experienced, knowing, sophisticated, worldly, worldly-wise; curious, inquiring, inquisitive, nosy (or nosey), snoopy; uncertain, unconvinced, undecided, undetermined, unsettled, unsure; hesitant

Near Antonyms green, ingenuous, innocent, naive (or naïve), simple, simpleminded, unknowing, unsophisticated, unworldly, wide-eyed; certain, confident, positive, sure; callow, inexperienced, raw; childlike, idealistic, impractical; beguiled, deceived, duped, gulled, tricked; careless, heedless, unsuspecting, unsuspicious, unwary

Antonyms credulous, gullible (also gullable), trustful, trusting, uncritical, unquestioning

3

not feeling sure about the truth, wisdom, or trustworthiness of someone or something <you should be very suspicious of those telephone calls from people telling you that you're the winner of a contest you never entered>

Synonyms distrustful, dubious, hinky [slang], mistrustful, skeptical, suspicious, trustless, uncertain, unconvinced, undecided, unsettled, unsure

Related Words ambivalent, conflicted, equivocal; diffident, insecure; halting, hesitant, indecisive, irresolute, vacillating, wavering

Near Antonyms assured, confident, sanguine, self-assured; decisive, determined, resolute

Antonyms certain, convinced, positive, sure