Diffident
Diffident adjective - Lacking self-confidence.
Usage example: stood in the doorway diffident and abashed
Unsure is a synonym for diffident in hesitant topic. In some cases you can use "Unsure" instead an adjective "Diffident", when it comes to topics like shy, fearful, insecure. popular alternative
Nearby Words: diffidence, diffidently
Unsure
Unsure adjective - Not feeling sure about the truth, wisdom, or trustworthiness of someone or something.
Usage example: unsure of her ability to handle the pressure of competing in the Olympic Games
Mutual synonyms
Cite this Source
Unsure and Diffident. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/diffident/unsure
Diffident & Unsure. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/diffident/unsure>.
Unsure or Diffident. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/diffident/unsure.
Google Ngram Viewer shows how "diffident" and "unsure" have occurred on timeline