Synonyms|443Antonyms|67|Broader|4Narrower|4Related|378
3
unprecedented
3
unusual(adjective, light, obscure, thin, strange)
3
unutterable(adjective, unspeakable)
2
antic
2
astonishing(adjective, great, extraordinary, unusual, strange)
2
beguiling
2
bewildering
2
bizarre(adjective, extraordinary, unusual, strange, exceptional)
2
contrary to reason(expression, idiom, impossibility)
2
cryptic(adjective, unfathomable, impenetrable, opaque, unintelligible)
2
fantastical
2
imponderable
2
inapprehensible
2
inscrutable
2
insupposable(adjective, belief, ridiculous, absurd, unbelievable)
2
irrational
2
mysterious
2
not possible(expression, idiom, impossibility)
2
opaque(adjective, unfathomable, impenetrable, unintelligible, puzzling)
2
open to suspicion(expression, idiom, unbelief doubt)
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APASmart Define. (2015). inconceivable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inconceivable/thesaurus/synonyms
ChicagoSmart Define. 2015. "inconceivable thesaurus" https://smartdefine.org/inconceivable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, inconceivable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inconceivable/thesaurus/synonyms>.
MLASmart Define. "inconceivable thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/inconceivable/thesaurus/synonyms>