| incompetent(adjective, weak, ability, poor, short) |
| unqualified(adjective, weak, ability, poor, short) |
| unfit(adjective, weak, ability, ready, inadequate) |
| inefficient(adjective, weak, ability, inadequate, feeble) |
| inept(adjective, weak, ability, inadequate, useless) |
| inadequate(adjective, strong, weak, ability, poor) |
| powerless(adjective, dull, strong, weak, ability) |
| unable(adjective, weak, skill, inadequate, feeble) |
| ineffective(adjective, weak, useless, adequate, incompetent) |
| impotent(adjective, strong, hurt, weak, ability) |
| ineffectual(adjective, strong, weak, ability, inadequate) |
| helpless(adjective, strong, hurt, weak, ability) |
| unskilled(adjective, weak, ability, inadequate, useless) |
| dysfunctional |
| weak(adjective, strong, hurt, ability, poor) |
| disabled(adjective, hurt, weak, feeble, debilitated) |
| inexpert(adjective, weak, ability, inadequate, feeble) |
| unequal to(verb, expression, adjective, phrasal verb) |
| unskillful(adjective, weak, ability, inadequate, useless) |
| feeble(adjective, weak, poor, short, inadequate) |