Synonyms|90Antonyms|3|Broader|1Narrower|0Related|38

5 entries under infallible topic. ×

7
foolproof(adjective, dependable)
5
unfailing(adjective, certain, flawless, unquestionable, undisputable)
2
guaranteed(adjective, certain, definite, sure, flawless)
2
unerring(adjective, certain, flawless, unquestionable, undisputable)
0
never-failing(certain, flawless, unquestionable, undisputable)
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APASmart Define. (2015). sure-fire thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/sure-fire/thesaurus/synonyms
ChicagoSmart Define. 2015. "sure-fire thesaurus" https://smartdefine.org/sure-fire/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, sure-fire thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/sure-fire/thesaurus/synonyms>.
MLASmart Define. "sure-fire thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/sure-fire/thesaurus/synonyms>