Sure
Sure adjective - Not likely to fail.
Usage example: a sure cure for the winter blues—a week in the Bahamas
Surefire is a synonym for sure in inevitable topic. In some cases you can use "Surefire" instead an adjective "Sure".
Nearby Word: surely
Surefire
Surefire adjective - Not likely to fail.
Usage example: pizza seems like a surefire choice for a food that everyone at the party will be happy with
Sure is a synonym for surefire in certain topic. You can use "Sure" instead an adjective "Surefire", if it concerns topics such as unerring, infallible, beyond dispute, absolutely certain.
Mutual synonyms
Cite this Source
Surefire and Sure. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/sure/surefire
Sure & Surefire. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/sure/surefire>.
Surefire or Sure. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/sure/surefire.
Google Ngram Viewer shows how "sure" and "surefire" have occurred on timeline