Synonyms|285Antonyms|5|Broader|0Narrower|0Related|6
3
unkillable
0
for a fact(expression, idiom)
0
free from doubt(expression, idiom)
0
inerrant
0
sure
0
surefire
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APASmart Define. (2015). never-failing thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/never-failing/thesaurus/related
ChicagoSmart Define. 2015. "never-failing thesaurus" https://smartdefine.org/never-failing/thesaurus/related (accessed September 30, 2026).
HarvardSmart Define 2015, never-failing thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/never-failing/thesaurus/related>.
MLASmart Define. "never-failing thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/never-failing/thesaurus/related>