Synonyms|451Antonyms|268|Broader|4Narrower|8Related|1.1k

45 entries under expression topic. ×

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fat chance(shaky, unpromising)
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for the birds(idiom, unbelievable, improbable)
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full of holes(idiom, unbelievable, improbable)
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in doubt(uncertain, doubtful, shaky, unsure)
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in theory possible(idiom, possibility)
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long shot(shaky, unpromising)
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not applicable(idealistic, improbable)
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not convincing
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not expected(doubtful, implausible)
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not possible(idiom, impossibility)
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not probable(adjective, doubtful, dubious, improbable)
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not sensible(idealistic, improbable)
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on cloud nine(adjective, idiom, fantastic, imaginary)
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on thin ice(idiom, shaky, unpromising)
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out of sight(idiom, improbability)
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out of this world(adjective, idiom, superb, fantastic)
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pie in the sky(adjective, idiom, fantastic, imaginary)
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pipe dream(adjective, fantastic, imaginary, unbelievable)
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slim and none(idiom, doubtful, implausible)
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surpassing belief
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APASmart Define. (2015). unlikely thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unlikely/thesaurus/synonyms
ChicagoSmart Define. 2015. "unlikely thesaurus" https://smartdefine.org/unlikely/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unlikely thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unlikely/thesaurus/synonyms>.
MLASmart Define. "unlikely thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/unlikely/thesaurus/synonyms>