Synonyms of unusable

1 Syllable
vain, weak, scrap
2 Syllables
drossy, pointless, idle, stupid, inept, waste, worthless, fruitless, no-good, bootless, feckless
3 Syllables
no-account, meaningless, outmoded, valueless, futile, profitless, hopeless, nonviable
4 Syllables
expendable, abortive, inutile, purposeless, unavailing, good-for-nothing, impractical, nonfunctional, incompetent, ineffectual, unworkable, dysfunctional, unfunctional, unpurposed, unusuable, infeasible
5 Syllables
unnegotiable, disadvantageous, unavailable, unprofitable, unproductive, ineffective, impracticable, unserviceable
6 Syllables
counterproductive, inoperative, unbusinesslike