Certain
Certain adjective - Known but not named.
Undoubted is a synonym for certain in behaviour topic. In some cases you can use "Undoubted" instead an adjective "Certain", when it comes to topics like known, unquestionable, confident, indisputable. popular alternative
Undoubted
Certain is a synonym for undoubted in undisputed topic. You can use "Certain" instead an adjective "Undoubted", if it concerns topics such as behaviour, confident, sure, indisputable. popular alternative
Nearby Word: undoubtedly
Mutual synonyms
Related pairs
Cite this Source
Undoubted and Certain. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/certain/undoubted
Certain & Undoubted. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/certain/undoubted>.
Undoubted or Certain. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/certain/undoubted.
Google Ngram Viewer shows how "certain" and "undoubted" have occurred on timeline