doubtful, dubious, problematic, questionable mean not affording assurance of the worth, soundness, or certainty of something. doubtful implies little more than a lack of conviction or certainty. dubious …

DOUBTFUL definition: 1. If you are doubtful about something, you are uncertain about it: 2. If a situation is doubtful…. Learn more.

Define doubtful. doubtful synonyms, doubtful pronunciation, doubtful translation, English dictionary definition of doubtful. adj. 1. Subject to or causing doubt: a doubtful claim; doubtful prospects.

Definition of doubtful adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Doubtful refers to a state of uncertainty or lack of conviction about something. It might indicate skepticism, disbelief, lack of faith or a feeling of hesitation to accept or practice something as being …

Jan 20, 2026 · Adjective doubtful (comparative more doubtful, superlative most doubtful) Subject to, or causing doubt. Experiencing or showing doubt, skeptical. Undecided or of uncertain outcome. …

To be doubtful about something is to feel that it is open to question or that more evidence is needed to prove it: to be doubtful about the statements of witnesses.

Doubtful definition: Subject to or causing doubt.

DOUBTFUL definition: of uncertain outcome or result. See examples of doubtful used in a sentence.

If you say that something is of doubtful quality or value, you mean that it is of low quality or value.