117 entries under certain topic. ×

25
incontrovertible(adjective, clear, hard, true)
23
undeniable(adjective, clear, hard, true)
21
incontestable(adjective, true, sure, certainty)
21
unquestionable(adjective, correct, solid, exact)
20
indisputable(adjective, true, definite, precise)
18
certain(adjective, true, definite, sure)
18
sure(adjective, clear, firm, solid)
17
indubitable(adjective, clear, firm, solid, physical)
17
positive(adjective, clear, true, definite)
13
absolute(adjective, clear, definite, precise)
12
conclusive(adjective, clear, definite, sure)
12
definite(adjective, clear, correct, firm, solid)
9
irrefragable(adjective, definite, precise, sure)
9
undoubted(adjective, clear, flat, firm, solid)
8
clear(adjective, definite, precise, sure)
8
decisive(adjective, clear, definite, precise)
8
unequivocal(adjective, clear, definite, sure)
6
convincing(adjective, sound, reasonable, definite)
6
final(adjective, definite, precise, sure)
6
unmistakable(adjective, clear, definite, precise)
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>