Synonyms of nonviable

1 Syllable
wild
2 Syllables
abstract, unreal, absurd
3 Syllables
quixotic, romantic, useless, unwise, starry-eyed
4 Syllables
illogical, chimerical, visionary, impossible, unusable, idealistic, improbable, impractical, nonfunctional, theoretical, unworkable, infeasible, unfeasible, otherworldly
5 Syllables
unnegotiable, speculative, inoperable, inapplicable, ivory-tower, unattainable, impracticable, inefficacious, unserviceable
6 Syllables
unbusinesslike