doubtful
Speech parts
1. doubtful - Noun
2. doubtful - Adjective
3. doubtful - Adjective Satellite
Meaning
Not settled in opinion; undetermined; wavering; hesitating in belief; also used, metaphorically, of the body when its action is affected by such a state of mind; as, we are doubtful of a fact, or of the propriety of a measure.
Admitting of doubt; not obvious, clear, or certain; questionable; not decided; not easy to be defined, classed, or named; as, a doubtful case, hue, claim, title, species, and the like.
Characterized by ambiguity; dubious; as, a doubtful expression; a doubtful phrase.
Of uncertain issue or event.
Fearful; apprehensive; suspicious.
Source: Webster's dictionarySynonyms
Antonyms
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Examples
All those instances to be found in history, whether real or fabulous, of a doubtful public spirit, at which morality is perplexed, reason is staggered, and from which affrighted Nature recoils, are their chosen and almost sole examples for the instruction of their youth.
A civilized society is one which tolerates eccentricity to the point of doubtful sanity.
Necessity may render a doubtful act innocent, but it cannot make it praiseworthy.
Doubtful the die, and dire the cast.
A patient that can swallow food makes the nurse doubtful.
Even doubtful accusations leave a stain behind them.