2
undisputable(adjective, certain, true)
2
unmistakeable
2
unqualified
2
veritable(adjective, physical, material, certain, absolute)
1
absolutely certain(expression, adjective, solid, certain, sure)
1
acknowledged
1
adducible
1
admissible
1
admitting no question(expression, idiom)
1
airtight(adjective, certain)
1
all out(expression, definite, precise, sure, decisive)
1
apodictic(adjective, demonstration)
1
at first hand(expression, idiom)
1
attestative
1
attestive
1
axiomatic
1
binding(sound, reasonable, certain, rational, definite)
1
bona fide(expression, sound, reasonable, material, rational)
1
capable of being touched
1
cinched(adjective, solid, certain, sure, confident)
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APASmart Define. (2015). irrefutable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/irrefutable/thesaurus/synonyms
ChicagoSmart Define. 2015. "irrefutable thesaurus" https://smartdefine.org/irrefutable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, irrefutable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/irrefutable/thesaurus/synonyms>.
MLASmart Define. "irrefutable thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/irrefutable/thesaurus/synonyms>