| ineffective(adjective, ineffectual, unproductive, impotent) |
| impotent(adjective, ineffective, ineffectual, unproductive) |
| forceless(adjective, ineffective, ineffectual, unproductive, impotent) |
| fruitless(adjective, ineffective, ineffectual, unproductive, impotent) |
| powerless(adjective, ineffective, ineffectual, unproductive, impotent) |
| idle(adjective, ineffective, ineffectual, unproductive, impotent) |
| inadequate(adjective, ineffective, ineffectual, unproductive, impotent) |
| incapable(adjective, ineffective, ineffectual, unproductive, impotent) |
| incompetent(adjective, ineffective, ineffectual, unproductive, impotent) |
| indecisive(adjective, ineffective, ineffectual, unproductive, impotent) |
| ineffectual(adjective, ineffective, unproductive, impotent) |
| inefficacious(adjective, ineffective, ineffectual, unproductive, impotent) |
| inefficient(adjective, ineffective, ineffectual, unproductive, impotent) |
| inferior(adjective, ineffective, ineffectual, unproductive, impotent) |
| inoperative(adjective, ineffective, ineffectual, unproductive, impotent) |
| lame(adjective, ineffective, ineffectual, unproductive, impotent) |
| nugatory(adjective, ineffective, ineffectual, unproductive, impotent) |
| paltry(adjective, ineffective, ineffectual, unproductive, impotent) |
| unavailing(adjective, ineffective, ineffectual, unproductive, impotent) |
| unimpressive(adjective, ineffective, ineffectual, unproductive, impotent) |