5
cocksure(adjective, clear, sure, confident, arrogant)
5
credible(adjective, correct, pure, original, real)
5
defined(adjective, correct, exact, superior, unusual)
5
divers(adjective, referring)
5
dogmatic(adjective, affirmation)
5
exact(adjective, clear, correct, honest, plain)
5
exceptional(adjective, extraordinary, superior, unusual, outstanding)
5
inexorable(adjective, near, obvious, expected, predictable)
5
invariable
5
legitimate(adjective, honest, pure, true, real)
5
manifest(adjective, plain, definite, absolute, obvious)
5
perfect(adjective, clear, complete, correct, total)
5
predictable(adjective, good, strong, honest, solid)
5
private(adjective, single, alone, isolation, apart)
5
provable(adjective, valid, undoubtable, inferable)
5
sealed(adjective, near, definite, sure, doomed)
5
separate(adjective, single, alone, isolation, apart)
5
sole(adjective, extraordinary, superior, unusual, exceptional)
5
stated(adjective, clear, plain, determined, near)
5
unalterable(adjective, definite, fixed, distinct, rigid)
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APASmart Define. (2016). certain thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/certain/thesaurus/synonyms
ChicagoSmart Define. 2016. "certain thesaurus" https://smartdefine.org/certain/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, certain thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/certain/thesaurus/synonyms>.
MLASmart Define. "certain thesaurus" 31 March 2016. Web. 20 September 2026. <https://smartdefine.org/certain/thesaurus/synonyms>