165 entries under sure topic. ×

5
confirmed(verb, adjective, certain, definite)
5
cool(adjective, calm, strong, tough, solid)
5
doubtless(adjective, adverb, clear, certain)
5
imperturbable(adjective, calm, quiet, cool, solid)
5
poised(adjective, certain, confident, self-assured)
5
self-assured(adjective, strong, smooth, easy, attitude)
5
self-possessed(adjective, calm, quiet, cool, attitude)
5
unquestionable(adjective, clear, certain, full, definite)
4
assertive(adjective, firm, energetic, certain)
4
composed(adjective, calm, quiet, cool, solid)
4
fearless(adjective, strong, tough, bold)
4
fixed(adjective, certain, positive, necessary)
4
hopeful(adjective, strong, bright, happy, solid)
4
incontestable(adjective, clear, certain, positive)
4
indubitable(adjective, clear, certain, definite)
4
irrefutable(adjective, clear, certain, definite)
4
overconfident(adjective, certain, confident, self-confident)
4
pronounced(verb, adjective, energetic, certain, definite)
4
reliable(adjective, strong, easy, firm, solid)
4
settled(adjective, strong, easy, solid, certain)
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APASmart Define. (2015). assured thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/assured/thesaurus/synonyms
ChicagoSmart Define. 2015. "assured thesaurus" https://smartdefine.org/assured/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, assured thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/assured/thesaurus/synonyms>.
MLASmart Define. "assured thesaurus" 9 December 2015. Web. 25 September 2026. <https://smartdefine.org/assured/thesaurus/synonyms>