Synonyms|192Antonyms|92|Broader|4Narrower|8Related|582
5
inconceivable(adjective, reasonable, belief, implausible, unconvincing)
5
difficult(adjective, implausible, unconvincing)
4
unbelievable(adjective, implausible, plausible, unconvincing)
4
unthinkable(adjective, unusual, incredible)
3
improbable
3
incredible
3
unimaginable
3
unlikely
3
unreasonable
2
doubtful
2
dubious
2
implausible
2
impossible
2
indescribable
2
nameless
1
preposterous
1
questionable
0
absurd
0
ambiguous
0
batty
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APASmart Define. (2015). conceivable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/conceivable/thesaurus/antonyms
ChicagoSmart Define. 2015. "conceivable thesaurus" https://smartdefine.org/conceivable/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2015, conceivable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/conceivable/thesaurus/antonyms>.
MLASmart Define. "conceivable thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/conceivable/thesaurus/antonyms>