675 entries under adjective topic. ×

5
private(single, alone, isolation, apart)
5
provable(valid, undoubtable, inferable)
5
sealed(near, definite, sure, doomed)
5
separate(single, alone, isolation, apart)
5
sole(extraordinary, superior, unusual, exceptional)
5
stated(clear, plain, determined, near)
5
unalterable(definite, fixed, distinct, rigid)
5
unchanging(set, clear, firm, solid)
5
warranted(definite, fixed, sure, valid)
4
any(pronoun, special, individual, various)
4
believing(firm, sure, positive, confident)
4
calm(firm, solid, stable, fixed)
4
confirmable(clear, hard, sound, plain)
4
conscientious(good, strong, reliable, consistent)
4
convincing(clear, pure, original, definite)
4
discrete(single, alone, isolation, apart)
4
distinguished(superior, unusual, exceptional, distinct)
4
doomed(restrained, coming, constrained, intended)
4
downright(clear, complete, flat, total)
4
ensured(fixed, sure, assured, guaranteed)
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APASmart Define. (2016). certain thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/certain/thesaurus/synonyms
ChicagoSmart Define. 2016. "certain thesaurus" https://smartdefine.org/certain/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, certain thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/certain/thesaurus/synonyms>.
MLASmart Define. "certain thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/certain/thesaurus/synonyms>