Doubtful
Doubtful adjective - Not feeling sure about the truth, wisdom, or trustworthiness of someone or something.
Usage example: he was doubtful about the decision to complete the project despite its mounting problems
Diffident is a synonym for doubtful. In some cases you can use "Diffident" instead an adjective "Doubtful".
Diffident
Diffident adjective - Not comfortable around people.
Doubtful is a synonym for diffident in hesitant topic. Sometimes you can use "Doubtful" instead an adjective "Diffident", if it concerns topics such as shy, insecure.
Nearby Words: diffidence, diffidently
Mutual synonyms
Related pairs
- dubious and doubtful
- dubious and diffident
- uneasy and doubtful
- uneasy and diffident
- hesitant and doubtful
- hesitant and diffident
- suspicious and doubtful
- suspicious and diffident
- apprehensive and doubtful
- apprehensive and diffident
- faltering and doubtful
- faltering and diffident
- insecure and doubtful
- insecure and diffident
Cite this Source
Diffident and Doubtful. (2016). Retrieved 2026, August 12, from https://thesaurus.plus/related/doubtful/diffident
Doubtful & Diffident. N.p., 2016. Web. 12 Aug. 2026. <https://thesaurus.plus/related/doubtful/diffident>.
Diffident or Doubtful. 2016. Accessed August 12, 2026. https://thesaurus.plus/related/doubtful/diffident.
Google Ngram Viewer shows how "doubtful" and "diffident" have occurred on timeline