61 entries under noun topic. ×

2
idea
2
illusion(belief, reality)
2
indecisiveness
1
mistrust(trust, doubtfulness)
1
adventure(plan, safety, surety, abstention)
1
alarm
1
angst
1
apprehension(calm, confidence)
1
attempt(try, effort)
1
chance(possibility, probability)
1
delusion(truth, reality, misconception, misbelief)
1
error(wrong, mistake)
1
fallacy(illusion, misconception)
1
fluke
1
indecision
1
limbo
1
mistake(error, success, misunderstanding, soundness)
1
qualm(calm, ease)
1
quandary(situation, solution)
1
query
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APASmart Define. (2016). certainty thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/certainty/thesaurus/antonyms
ChicagoSmart Define. 2016. "certainty thesaurus" https://smartdefine.org/certainty/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2016, certainty thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/certainty/thesaurus/antonyms>.
MLASmart Define. "certainty thesaurus" 1 April 2016. Web. 27 September 2026. <https://smartdefine.org/certainty/thesaurus/antonyms>