- doubtful
- doubtful [adj1] questionable, unclear ambiguous, borderline, chancy, clouded, contingent, debatable, dicey, disreputable, doubtable, dubious, dubitable, equivocal, far-fetched, fat chance, fishy*, hazardous, hazy, iffy*, impugnable, inconclusive, indecisive, indefinite, indeterminate, indistinct, insecure, long shot*, obscure, on thin ice*, open, pending, precarious, problematic, shady, sneaky*, speculative, suspect, suspicious, touch-and-go*, touchy, uncertain, unconfirmed, undecided, uneasy, unsettled, unstable, unsure, up for grabs*; concepts 529,535 —Ant. certain, clear, confirmed, decided, definite, exact, resolved, settled, unquestionable doubtful [adj2] not believing agnostic, baffled, confused, discomposed, disconcerted, distracted, distrustful, disturbed, doubting, dubious, equivocal, faithless, faltering, flustered, hesitant, hesitating, in a quandary, in clouds*, indecisive, in dilemma, irresolute, like doubting Thomas*, lost, not following, of two minds*, perplexed, puzzled, questioning, skeptical, suspicious, tentative, theoretical, troubled, uncertain, unconvinced, undecided, unresolved, unsettled, unsure, vacillating, wavering, without belief; concepts 403,542 —Ant. believing, certain, confident, convinced, sure, trusting
New thesaurus. 2014.