75 entries under adjective topic. ×

17
confident(weak, certain, timid, assured)
12
certain(clear, fixed, sure, confident)
11
sure(clear, certain, definite)
10
clear(certain, doubtful, sure, ambiguous)
9
definite(clear, exact, certain, fixed)
8
determined(verb, clear, sure)
6
indisputable
6
reliable(clear, bad, weak, sure)
6
unchanging(clear, sure)
5
dependable(weak, unreliable)
5
distinct
5
faithful(cool, weak, false, authentic)
5
indubitable
5
resolute
5
sealed
5
stable
5
steady
5
trustworthy(clear, sure)
5
unquestionable
4
decisive
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APASmart Define. (2016). uncertain thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/uncertain/thesaurus/antonyms
ChicagoSmart Define. 2016. "uncertain thesaurus" https://smartdefine.org/uncertain/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, uncertain thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/uncertain/thesaurus/antonyms>.
MLASmart Define. "uncertain thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/uncertain/thesaurus/antonyms>