7 entries under doubtful topic. ×

14
unsure(adjective, clear, certain, insecure)
10
uncertain(adjective, clear, changeable)
8
dubious(adjective, clear, honest)
5
indefinite(adjective, certain, vague, unsure)
4
shaky(adjective, strong, sound)
3
equivocal(adjective, uncertain)
3
precarious(adjective, strong, stable, tricky)
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APASmart Define. (2016). sure thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sure/thesaurus/antonyms
ChicagoSmart Define. 2016. "sure thesaurus" https://smartdefine.org/sure/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2016, sure thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sure/thesaurus/antonyms>.
MLASmart Define. "sure thesaurus" 31 March 2016. Web. 25 September 2026. <https://smartdefine.org/sure/thesaurus/antonyms>