54 entries under correct topic. ×

18
certain(adjective, firm, solid, physical)
16
unquestionable(adjective, right, honest, plain)
14
indubitable(adjective, clear, sound, right)
13
positive(adjective, clear, certain, real)
12
sure(adjective, clear, sound, firm)
11
undeniable(adjective, clear, right, firm)
8
genuine(adjective, clear, sound, right)
8
real(adjective, clear, sound, right)
8
true(adjective, clear, sound, right)
7
veritable(adjective, sound, right, flat)
6
authentic(adjective, right, flat, honest)
6
actual(adjective, sound, right, plain)
6
factual(adjective, sound, right, exact)
4
absolute(adjective, clear, certain, real)
4
right(adjective, plain, exact, physical)
3
bona fide(expression, adjective, sound, right)
3
very(adjective, right, exact, pure)
2
sure-enough(adjective, right, flat, honest)
2
truthful(adjective, right, honest, exact)
2
unerring(adjective, clear, sound, right)
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APASmart Define. (2015). undoubted thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/undoubted/thesaurus/synonyms
ChicagoSmart Define. 2015. "undoubted thesaurus" https://smartdefine.org/undoubted/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, undoubted thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/undoubted/thesaurus/synonyms>.
MLASmart Define. "undoubted thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/undoubted/thesaurus/synonyms>