Useful
Unfailing
Unfailing adjective - Not being or likely to be wrong.
Useful and unfailing are semantically related. Sometimes you can use "Useful" instead an adjective "Unfailing".
Nearby Word: unfailingly
Mutual synonyms
Cite this Source
Unfailing and Useful. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/useful/unfailing
Useful & Unfailing. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/useful/unfailing>.
Unfailing or Useful. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/useful/unfailing.
Google Ngram Viewer shows how "useful" and "unfailing" have occurred on timeline