adjective
distrustful
Synonyms: apprehensive, cagey, careful, cautious, doubtful, green-eyed, incredulous, in doubt, jealous, leery, mistrustful, not born yesterday on the lookout, questioning, quizzical, skeptical, suspect, suspecting, unbelieving, uptight, wary, watchful, without belief, without faith, wondering
Antonyms: innocent, trustworthy, trusty
adjective
doubtful, fishy
Synonyms: borderline, debatable, different, disputable, doubtable, dubious, equivocal, farfetched, funny, irregular, not kosher, open, open to doubt, open to question, out of line, overt, peculiar, phony, problematic, queer, questionable, reaching, rings untrue, shady, shaky, suspect, too much, uncertain, uncommon, unsure, unusual, won’t wash
Antonyms: believable, indubious, palpable, undoubted, unquestionable