Synonyms for


Similarity of adj doubtful

3 senses of doubtful

Sense 1:
doubtful, dubious, dubitable, in question(predicate)
questionable (vs. unquestionable)
Sense 2:
doubtful, dubious
uncertain (vs. certain), unsure (vs. sure), incertain
Sense 3:
doubtful, tentative
unsettled (vs. settled)
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