Synonyms|116Antonyms|28|Broader|0Narrower|0Related|85
1
convincing(certain, definite, precise, sure, decisive)
1
decided(adjective, certain)
1
deciding(definite, precise, sure, decisive, final)
1
demonstrating
1
determinant(adjective, definite, precise, sure, decisive)
1
determinative(definite, precise, sure, decisive, final)
1
evident
1
factual
1
final(certain, definite, precise, sure, decisive)
1
flat out(expression, definite, precise, sure, decisive)
1
historical
1
imperishable
1
incorruptible
1
inextinguishable
1
irrefrangible(adjective, definite, precise, sure, decisive)
1
irresistible(adjective, demonstration)
1
irrevocable(definite, precise, sure, decisive, final)
1
litmus test(expression, definite, precise, sure, decisive)
1
patent(adjective, certain)
1
provable
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APASmart Define. (2015). irrefragable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/irrefragable/thesaurus/synonyms
ChicagoSmart Define. 2015. "irrefragable thesaurus" https://smartdefine.org/irrefragable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, irrefragable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/irrefragable/thesaurus/synonyms>.
MLASmart Define. "irrefragable thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/irrefragable/thesaurus/synonyms>