Synonyms|37Antonyms|0|Broader|0Narrower|0Related|3

33 entries under adjective topic. ×

3
inconceivable(likely, implausible)
2
flimsy(likely, implausible)
2
implausible
2
impossible
2
improbable(likely, implausible)
2
incredible(likely, implausible)
2
shaky(likely, implausible)
2
thin(informal, likely, implausible)
2
unbelievable(likely, implausible)
2
unconvincing(likely, implausible)
2
unsubstantial(likely, implausible)
2
weak(likely, implausible)
1
doubtful
1
dubious
1
obscure
1
problematic
1
suspect
1
too much(informal, implausible)
1
unimaginable
1
unreasonable
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APASmart Define. (2013). unconceivable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unconceivable/thesaurus/synonyms
ChicagoSmart Define. 2013. "unconceivable thesaurus" https://smartdefine.org/unconceivable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2013, unconceivable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unconceivable/thesaurus/synonyms>.
MLASmart Define. "unconceivable thesaurus" 17 June 2013. Web. 25 September 2026. <https://smartdefine.org/unconceivable/thesaurus/synonyms>