1
preventable
1
questioning
1
reluctant(careless, enthusiastic)
1
shadowy
1
skeptical
1
suspect
1
suspicious
1
swerving
1
tentative(adjective, uncertain, indefinite, conditional, experimental)
1
touch-and-go(adjective, risky)
1
treacherous
1
troubled(happy, certain)
1
unconfirmed
1
unconvinced
1
undefined(adjective, vague)
1
undependable
1
undetermined
1
unfixed
1
unpredictable
1
unresolved(adjective, uncertain, settled)
10 years ago|4.3k views|share |citing 
APASmart Define. (2016). sure thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sure/thesaurus/antonyms
ChicagoSmart Define. 2016. "sure thesaurus" https://smartdefine.org/sure/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, sure thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sure/thesaurus/antonyms>.
MLASmart Define. "sure thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/sure/thesaurus/antonyms>