Doubtful — synonyms, definition

1. doubtful (o)

at a loss dumbfounded nonplussed perplexed

2. doubtful (a)

abashed ambiguous ambivalent apocryphal apprehensive assumed at a loss baffled befuddled bewildered borderline chancy changeable clouded confounded confused conjectural conservative cryptic dazed • • •

3. doubtful (Adjective)

doubtable dubitable in question tentative unbelievable unconvincing unlikely

doubtful (Adjective) — Open to doubt or suspicion. ex. "the candidate's doubtful past"

doubtful (Adjective) — Fraught with uncertainty or doubt. ex. "they were doubtful that the cord would hold" ex. "it was doubtful whether she would be admitted"

doubtful (Adjective) — Unsettled in mind or opinion. ex. "drew a few doubtful conclusions"

doubtful (Adjective) — Having a probability too low to inspire belief.