Synonyms of unable

1 Syllable

weak

2 Syllables

inapt, inept, clumsy, uncool, clumsier, helpless, hog-tied, unfit

3 Syllables

impotent, inadept, unskilled, forceless, basket-case, unhandy, ham-handed, ill-shaped, impuissant, unfitted, slack-spined, powerless

4 Syllables

inproficient, unequipped, unqualified, ill-adapted, unproficient, defeasible, untalented, incompetent, ineffectual, incapable, sidelined, inefficient

5 Syllables

invertebrate, anticlimactic, inadequate, ineffective, inefficacious

6 Syllables

incapacitated, inoperative