doubtful

noun

A doubtful person or thing.

adjective

Experiencing or showing doubt, skeptical.

Subject to, or causing doubt.

Undecided or of uncertain outcome.

Improbable or unlikely.

Unclear or unreliable.

Suspicious, or of dubious character.

(obsolete) Fearsome, dreadful.

Roots

dubitodoubt- · Latin · waver, hesitate

Synonyms for doubtful

dubitableadj dubiousadj doubtableadj questionableadj iffyadj uncertainadj doubtingadj unsureadj unconvincedadj debatableadj equivocaladj unclearadj suspiciousadj disputableadj unlikelyadj undecidedadj

Synonyms & related words for doubtful

Find synonyms, related words, and the definition of doubtful — including dubitable, dubious, doubtable, questionable, iffy, uncertain. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to doubtful

Explore words related to doubtful — words associated with it, words that go with it, and its nearest matches in meaning. Related words include iffiness, dubitation, dubiousness, doubtingly, doubtfulness, dubiosity, amphibolous, obelize. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for doubtful

Common synonyms for doubtful include dubitable, dubious, doubtable, questionable, iffy, uncertain, doubting, unsure — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does doubtful come from?

The word doubtful breaks down into one root of Latin origin: the root doubt-, from Latin dubito (“waver, hesitate”). Explore each root to see other English words built from the same source.