16 entries under certain topic. ×

13
confident(adjective, weak, timid, assured)
10
sure(adjective, clear, stable, definite)
3
definite(adjective, clear, obscure, doubtful)
2
determined(adjective, clear)
2
undoubted(adjective, clear, doubtful, undisputed)
1
positive(adjective, definite)
1
inevitable(adjective, distant)
1
secure(adjective, clear, weak, soft)
1
unfailing(adjective, unchanging)
1
unmistakable(adjective, obscure, uncertain, definite)
1
unwavering(adjective, clear)
0
clear(adjective, doubtful, ambiguous, filled)
0
believing(adjective, clear)
0
indubious(adjective, clear)
0
trustworthy(adjective, clear)
0
trusty(adjective, clear)
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APASmart Define. (2016). unsure thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unsure/thesaurus/antonyms
ChicagoSmart Define. 2016. "unsure thesaurus" https://smartdefine.org/unsure/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, unsure thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unsure/thesaurus/antonyms>.
MLASmart Define. "unsure thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/unsure/thesaurus/antonyms>