49 entries under adjective topic. ×

12
impossible
8
impractical(improper, impossible)
6
unfeasible(improper, impossible, feasible)
6
inconceivable(improper, impossible)
5
unlikely(improper, impossible)
4
unworkable(improper, impossible)
3
unreasonable(improper, impossible)
2
hopeless
2
fantastic
2
implausible(improper, impossible)
2
impracticable
2
unattainable(improper, impossible)
2
unpractical(improper, impossible)
1
disadvantageous(improper, impossible)
1
improbable
1
improper
1
inappropriate(improper, impossible)
1
incredible
1
infeasible
1
preposterous
<123>
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APASmart Define. (2015). feasible thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/feasible/thesaurus/antonyms
ChicagoSmart Define. 2015. "feasible thesaurus" https://smartdefine.org/feasible/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2015, feasible thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/feasible/thesaurus/antonyms>.
MLASmart Define. "feasible thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/feasible/thesaurus/antonyms>