194 entries under sure topic. ×

47
positive(adjective, good, set, clear, strong)
44
definite(adjective, good, clear, strong, complete)
35
unquestionable(adjective, clear, correct, flat, honest)
32
absolute(adjective, clear, strong, complete, correct)
31
confident(adjective, set, clear, strong, easy)
23
clear(adjective, complete, flat, firm, total)
22
specific(adjective, clear, correct, plain, exact)
19
determined(adjective, good, strong, easy, firm)
18
assured(adjective, clear, understanding, strong, easy)
17
dependable(adjective, good, clear, strong, sound)
17
fixed(adjective, change, clear, complete, firm)
17
irrefutable(adjective, certain, true, definite)
17
reliable(adjective, clear, strong, sound, easy)
17
unambiguous(adjective, clear, firm, plain, perfect)
16
decided(adjective, clear, firm, solid, perfect)
15
categorical(adjective, clear, complete, flat, total)
15
firm(noun, adjective, good, change, clear)
15
obvious(adjective, definite, evident, indisputable)
15
secure(verb, adjective, clear, sound, firm)
14
convinced(adjective, set, clear, firm, content)
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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>