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.

Find 152 different ways to say DOUBTFUL, along with antonyms, related words, and example sentences at Thesaurus.com.

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.

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

When you're doubtful about something, you're not sure about it. You might feel doubtful about the picnic you've planned if the forecast calls for torrential rain. Whether you're uncertain, undecided, or …

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

Find 5,464 synonyms for doubtful and other similar words that you can use instead based on 22 separate contexts from our thesaurus.

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

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. …