Synonyms|527Antonyms|88|Broader|4Narrower|0Related|667
1
enigmatic
1
fabricated(mythical, fabled, mythological)
1
fantastical
1
far out(verb, expression, phrasal verb, unreasonable, dubious)
1
fictitious
1
figmental(mythical, fabled, mythological)
1
fishlike
1
fly-by-night(uncertain, doubtful, unsure)
1
for the birds(expression, idiom, extraordinary, unreasonable, dubious)
1
foreseeable
1
full of holes(expression, idiom, extraordinary, unreasonable, dubious)
1
handed-down(mythical, fabled, mythological)
1
happen
1
hardly possible
1
harebrained(extraordinary, amazing, incredible)
1
heavy
1
hesitant(uncertain, doubtful, unsure)
1
hundred-to-one(adjective, doubtful, likely, unlikely, implausible)
1
idealistic(wild, unreasonable, useless, absurd, abstract)
1
imaginary(mythical, fabled, mythological)
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APASmart Define. (2015). improbable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/improbable/thesaurus/synonyms
ChicagoSmart Define. 2015. "improbable thesaurus" https://smartdefine.org/improbable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, improbable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/improbable/thesaurus/synonyms>.
MLASmart Define. "improbable thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/improbable/thesaurus/synonyms>