Certain
Certain adjective - Not likely to fail.
Usage example: chicken soup is grandma's certain cure for pretty much whatever ails you
Unerring is a synonym for certain in property topic. In some cases you can use "Unerring" instead an adjective "Certain", when it comes to topics like reliable, unequivocal, undoubtable.
Unerring
Mutual synonyms
Cite this Source
Unerring and Certain. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/certain/unerring
Certain & Unerring. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/certain/unerring>.
Unerring or Certain. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/certain/unerring.
Google Ngram Viewer shows how "certain" and "unerring" have occurred on timeline