Synonyms|272Antonyms|89|Broader|3Narrower|0Related|401
3
doubtful
3
precarious(adjective, strong, stable, doubtful, tricky)
3
suspicious(adjective, careless, certain, doubtful, fishy)
3
unsure(adjective, clear, certain, doubtful, insecure)
2
debatable(adjective, controversial)
2
dubious(adjective, clear, honest)
2
equivocal
2
problematic(adjective, clear)
2
questionable
2
shaky(adjective, clear)
2
unclear
2
undecided(adjective, definite, sure)
1
chancy
1
dubitable
1
fishy
1
incredulous
1
insecure
1
shady
1
surreal
1
uncertain(adjective, clear, sure)
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APASmart Define. (2015). undoubted thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/undoubted/thesaurus/antonyms
ChicagoSmart Define. 2015. "undoubted thesaurus" https://smartdefine.org/undoubted/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2015, undoubted thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/undoubted/thesaurus/antonyms>.
MLASmart Define. "undoubted thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/undoubted/thesaurus/antonyms>