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doubtful
adjective
- Not affording certainty: ambiguous, borderline, chancy, clouded, dubious, dubitable, equivocal, inconclusive, indecisive, indeterminate, problematic, problematical, questionable, uncertain, unclear, unsure.
Informal: iffy.
Idioms:
at issue, in doubt, in question. See
certain, clear
- Not likely: improbable, questionable, unapt, unlikely. See
likely
- Experiencing doubt: dubious, skeptical, uncertain, undecided, unsure.
Idiom:
in doubt. See
certain
- In doubt or dispute: arguable, contested, debatable, disputable, exceptionable, moot, mootable, problematic, problematical, questionable, uncertain. See
certain
- Of dubious character: equivocal, questionable, shady, suspect, suspicious, uncertain.
Informal: fishy. See
honest
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