Synonyms|352Antonyms|90|Broader|7Narrower|0Related|321
1
downright(clear, certain, sure, absolute, indisputable)
1
electropositive
1
ensured(adjective, solid, certain, sure, confident)
1
evidential
1
evidentiary
1
ex parte
1
express(adjective, clear, certain, sure)
1
eye-witness
1
eyewitness
1
favorable
1
firsthand
1
flat out(expression, definite, precise, sure, decisive)
1
founded on
1
genuine(clear, sound, reasonable, certain, rational)
1
grounded on
1
guaranteed(adjective, clear, hard, sound, firm)
1
hearsay
1
historical
1
implicit
1
impregnable
For more, visit Irrefutable on Power Thesaurus
11 years ago|7.7k views|share |citing 
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>