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

49 entries under expression topic. ×

1
unheard of(adjective, doubtful, likely, unlikely)
0
barely possible(idiom, possibility)
0
be improbable(idiom, improbability)
0
be unable do
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be unable to
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blue sky(silly, impractical, unlikely, idealistic)
0
contrary to reason(idiom, impossibility)
0
extraordinarily good
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fat chance(shaky, unlikely, unpromising)
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highly unlikely(adjective, impossible)
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in doubt(uncertain, doubtful, shaky, unsure)
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just possible(idiom, possibility)
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long shot(shaky, unlikely, unpromising)
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marginally possible(idiom, possibility)
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no go(wild, unreasonable, useless, absurd)
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not applicable(silly, impractical, unlikely, idealistic)
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not convincing
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not possible(idiom, impossibility)
0
not probable(adjective, doubtful, dubious)
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not sensible(silly, impractical, unlikely, dreamy)
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APASmart Define. (2015). improbable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/improbable/thesaurus/synonyms
ChicagoSmart Define. 2015. "improbable thesaurus" https://smartdefine.org/improbable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, improbable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/improbable/thesaurus/synonyms>.
MLASmart Define. "improbable thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/improbable/thesaurus/synonyms>