Fallible and Sure

Opposite meaning words

Fallible adjective - Wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings.

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Sure is an antonym for fallible in able or prone to err topic.

Nearby Words: fallacy, fallibility

Sure adjective - Not likely to fail.

Usage example: a sure cure for the winter blues—a week in the Bahamas

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Fallible is an antonym for sure.

Nearby Word: surely

Cite this Source

Sure and Fallible. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/fallible/sure

Fallible & Sure. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/fallible/sure>.

Sure or Fallible. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/fallible/sure.

Google Ngram Viewer shows how "fallible" and "sure" have occurred on timeline