Suspicious

debatable, disputable, dodgy, doubtable, dubious, dubitable, equivocal, fishy, problematic ( problematical), queer, questionable, shady, shaky, suspect, suspicious

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

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

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

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

green, ingenuous, innocent, naive ( 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

distrustful, dubious, hinky, mistrustful, skeptical, suspicious, trustless, uncertain, unconvinced, undecided, unsettled, unsure

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

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