Synonyms|37Antonyms|0|Broader|0Narrower|0Related|3
3
inconceivable(adjective, likely, implausible)
2
flimsy(adjective, likely, implausible)
2
implausible(adjective, likely)
2
impossible(adjective, implausible)
2
improbable(adjective, likely, implausible)
2
incredible(adjective, likely, implausible)
2
shaky(adjective, likely, implausible)
2
thin(adjective, informal, likely, implausible)
2
unbelievable(adjective, likely, implausible)
2
unconvincing(adjective, likely, implausible)
2
unsubstantial(adjective, likely, implausible)
2
weak(adjective, likely, implausible)
1
doubtful(adjective, implausible)
1
dubious(adjective, implausible)
1
obscure(adjective, implausible)
1
problematic(adjective, implausible)
1
suspect(adjective, implausible)
1
too much(adjective, informal, implausible)
1
unimaginable
1
unreasonable(adjective, implausible)
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APASmart Define. (2013). unconceivable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unconceivable/thesaurus/synonyms
ChicagoSmart Define. 2013. "unconceivable thesaurus" https://smartdefine.org/unconceivable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2013, unconceivable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unconceivable/thesaurus/synonyms>.
MLASmart Define. "unconceivable thesaurus" 17 June 2013. Web. 20 September 2026. <https://smartdefine.org/unconceivable/thesaurus/synonyms>