| unable(adjective, skill, talent, inept, powerless) |
| unqualified(adjective, weak, skill, inadequate, unfit) |
| unfit(adjective, weak, skill, inadequate, inept) |
| clumsy(weak, skill, inadequate, unfit, inept) |
| helpless(weak, skill, unfit, inept, powerless) |
| hog-tied(weak, skill, unfit, inept, powerless) |
| impotent(adjective, weak, skill, unfit, inept) |
| impuissant(weak, skill, inadequate, unfit, inept) |
| incapable(weak, skill, unfit, inept, powerless) |
| incapacitated(weak, skill, unfit, inept, powerless) |
| incompetent(weak, skill, inadequate, unfit, inept) |
| ineffectual(skill, inadequate, unfit, inept, powerless) |
| inefficacious(weak, skill, inadequate, unfit, inept) |
| inefficient(weak, skill, inadequate, unfit, inept) |
| inept(weak, skill, inadequate, unfit, powerless) |
| inoperative(weak, skill, unfit, inept, powerless) |
| no can do(weak, skill, inadequate, unfit, inept) |
| no good(weak, skill, inadequate, unfit, inept) |
| not cut out for(weak, skill, inadequate, unfit, inept) |
| not equal to(weak, skill, inadequate, unfit, inept) |