Synonyms|519Antonyms|152|Broader|6Narrower|4Related|1k
1
incredible
1
infeasible
1
inoperable
1
preposterous
1
ridiculous
1
unbelievable
1
undoable
1
unfitting(adjective, improper, impossible)
1
unprofitable(adjective, improper, impossible)
1
unrealistic
1
unrealizable
1
unsuitable(adjective, improper, impossible)
1
unthinkable
1
unusable
1
vain
0
abortive
0
absurd
0
adverse
0
agonizing
0
antagonistic
For more, visit Feasible on Power Thesaurus
11 years ago|2k views|share |citing 
APASmart Define. (2015). feasible thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/feasible/thesaurus/antonyms
ChicagoSmart Define. 2015. "feasible thesaurus" https://smartdefine.org/feasible/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2015, feasible thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/feasible/thesaurus/antonyms>.
MLASmart Define. "feasible thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/feasible/thesaurus/antonyms>