Synonyms|607Antonyms|112|Broader|9Narrower|11Related|650

201 entries under adjective topic. ×

1
perplexing(difficult, awkward, uneasy, uncomfortable)
1
perverse(support, difficulty, attitude)
1
pretentious(perfect, false, extravagant, ideal)
1
puzzling(awkward, unreasonable, dubious, uneasy)
1
remote
1
senseless
1
starry-eyed(wild, silly, unreasonable, useless)
1
strange(extraordinary, unbelievable, implausible, unthinkable)
1
totally unlikely(expression, idiom)
1
unaccepted
1
undefeatable(insuperable, insurmountable)
1
undreamed of
1
undreamt of
1
unheard-of(extraordinary, strange, unbelievable, implausible)
1
unreal(wild, unreasonable, useless, absurd)
1
unresolvable
1
unserviceable(wild, unreasonable, useless, absurd)
1
utopian(ideal, imaginary)
1
wayward(support, attitude)
0
airy(perfect, ideal, imaginary, lofty)
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APASmart Define. (2016). impossible thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/impossible/thesaurus/synonyms
ChicagoSmart Define. 2016. "impossible thesaurus" https://smartdefine.org/impossible/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, impossible thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/impossible/thesaurus/synonyms>.
MLASmart Define. "impossible thesaurus" 9 March 2016. Web. 23 September 2026. <https://smartdefine.org/impossible/thesaurus/synonyms>