| ineffective(adjective, dull, light, weak, soft) |
| useless(adjective, weak, poor, failure, base) |
| unavailing(adjective, weak, poor, failure, base) |
| futile(adjective, weak, poor, base, careless) |
| feeble(adjective, dull, strong, light, weak) |
| impotent(adjective, strong, weak, ability, poor) |
| unproductive(adjective, weak, poor, base, silly) |
| inefficient(adjective, weak, thin, delicate, failure) |
| pointless(adjective, poor, base, inferior, insignificant) |
| weak(adjective, dull, strong, light, soft) |
| bootless(adjective, useless, arouse bad feelings, feature, state) |
| fruitless(adjective, weak, failure, silly, stupid) |
| vain(adjective, weak, stupid, insignificant, inadequate) |
| worthless(adjective, weak, poor, base, careless) |
| inefficacious(adjective, skill, affect, inadequate, feeble) |
| abortive(adjective, failure, stupid, inadequate, feeble) |
| incompetent(adjective, weak, poor, thin, delicate) |
| inadequate(adjective, dull, mean, strong, light) |
| unsuccessful(adjective, weak, inadequate, limited, feeble) |
| idle(adjective, weak, stupid, inadequate, limited) |