Unfailing
Unfailing adjective - Not being or likely to be wrong.
Valid and unfailing are semantically related in authentic topic. In some cases you can use "Valid" instead an adjective "Unfailing".
Nearby Word: unfailingly
Mutual synonyms
Cite this Source
Valid and Unfailing. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/unfailing/valid
Unfailing & Valid. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/unfailing/valid>.
Valid or Unfailing. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/unfailing/valid.
Google Ngram Viewer shows how "unfailing" and "valid" have occurred on timeline