Synonyms|527Antonyms|88|Broader|4Narrower|0Related|667

68 entries under doubtful topic. ×

1
mootable(uncertain, unsure)
1
not expected(expression, adjective, likely, unlikely)
1
open(uncertain, shaky, unsure, unlikely)
1
outside chance(expression, adjective, dubious, likely)
1
perplexed(uncertain, unsure)
1
reluctant(uncertain, unsure)
1
skeptical(uncertain, unsure)
1
slim and none(expression, adjective, idiom, likely)
1
touch and go(expression, idiom, uncertain, unsure)
1
trustless(uncertain, unsure)
1
unassured(uncertain, unsure)
1
unclear(uncertain, shaky, unsure, unlikely)
1
unconvinced(uncertain, unsure)
1
undecided(uncertain, unsure)
1
undependable(uncertain, unsure)
1
unheard-of(extraordinary, strange, dubious, unbelievable)
1
unheard of(expression, adjective, likely, unlikely)
1
unreliable(uncertain, unsure)
1
unsure(adjective, open, obscure, poor, thin)
1
untrustworthy(uncertain, unsure)
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APASmart Define. (2015). improbable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/improbable/thesaurus/synonyms
ChicagoSmart Define. 2015. "improbable thesaurus" https://smartdefine.org/improbable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, improbable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/improbable/thesaurus/synonyms>.
MLASmart Define. "improbable thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/improbable/thesaurus/synonyms>