doubtful
WordReference English Thesaurus © 2025
Sense: Adjective: improbable
Synonyms:
Sense: Adjective: questionable
Synonyms:
questionable, suspicious Collocations, suspect Collocations, fishy , dubious Collocations, debatable, shady Collocations , dodgy Collocations , problematic, equivocal, iffy
Sense: Adjective: ambiguous
Synonyms:
ambiguous, undetermined, unresolved, uncertain Collocations, up in the air , vague Collocations, indistinct, unclear Collocations, indefinite, open to doubt, open to question, in question, equivocal, hazy Collocations, fuzzy Collocations
Sense: Adjective: uncertain in mind
Synonyms:
dubious Collocations, doubting, questioning, skeptical, sceptical , iffy , unsure, wavering, hesitant, hesitating, uncertain Collocations, disconcerted, discomposed, flustered, of two minds, in two minds, unable to make up your mind, suspicious Collocations, disbelieving, indecisive, undecided, unsettled, not sure, unconvinced, vacillating, irresolute, of little faith, faithless, distrustful, not able to make head or tail of, going around in circles, on the fence