Certain
Certain adjective - Having or showing a mind free from doubt.
Usage example: I'm certain that they'll arrive on time
Clear is a synonym for certain in unquestionable topic. In some cases you can use "Clear" instead the word "Certain" as an adjective or a verb, when it comes to topics like unequivocal, incontestable, undoubtable.
Clear
Clear adjective - Having or showing a mind free from doubt.
Usage example: I need to be absolutely clear about what you're saying
Certain is a synonym for clear in unequivocal topic. You can use "Certain" instead an adjective "Clear", if it concerns topics such as incontestable.
Mutual synonyms
Cite this Source
Clear and Certain. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/certain/clear
Certain & Clear. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/certain/clear>.
Clear or Certain. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/certain/clear.
Google Ngram Viewer shows how "certain" and "clear" have occurred on timeline