Impeccable
Impeccable adjective - Being entirely without fault or flaw.
Usage example: the etiquette expert was celebrated for her absolutely impeccable manners
Unfailing and impeccable are semantically related. In some cases you can use "Unfailing" instead an adjective "Impeccable".
Nearby Words: impeccability, impeccably
Unfailing
Unfailing adjective - Not being or likely to be wrong.
Usage example: an unfailing judge of personal character
Impeccable and unfailing are semantically related. Sometimes you can use "Impeccable" instead an adjective "Unfailing".
Nearby Word: unfailingly
Mutual synonyms
Related pairs
Cite this Source
Unfailing and Impeccable. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/impeccable/unfailing
Impeccable & Unfailing. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/impeccable/unfailing>.
Unfailing or Impeccable. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/impeccable/unfailing.
Google Ngram Viewer shows how "impeccable" and "unfailing" have occurred on timeline