Old
Unfailing
Unfailing adjective - Not being or likely to be wrong.
Old and unfailing are semantically related. Sometimes you can use "Old" instead an adjective "Unfailing".
Nearby Word: unfailingly
Mutual synonyms
Both words in one sentence
- Ekaterin in the Vorkosigan Saga isn't an all-too-innocent girl but a 30-year-old married woman possessed of such unfailing reserve that she refuses to show visible anger or frustration even after falling headfirst into a pond.
Source: Is This What Anger Feels Like?
Cite this Source
Unfailing and Old. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/old/unfailing
Old & Unfailing. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/old/unfailing>.
Unfailing or Old. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/old/unfailing.
Google Ngram Viewer shows how "old" and "unfailing" have occurred on timeline