| purposeless(adjective, weak, stupid, idle, useless) |
| impotent(adjective, failure, inferior, inadequate, limited) |
| inoperative(adjective, weak, stupid, inferior, inadequate) |
| meaningless(adjective, weak, stupid, idle, useless) |
| otiose(adjective, useless, trivial, empty, insufficient) |
| hollow(adjective, useless, trivial, empty, insufficient) |
| sterile |
| unrewarding(adjective, arouse bad feelings) |
| hopeless(adjective, stupid, idle, useless, trivial) |
| senseless |
| sleeveless |
| unfruitful(adjective, inadequate, limited, feeble, useless) |
| inadequate(adjective, limited, feeble, useless, impractical) |
| inane |
| inefficient(failure, inferior, inadequate, limited, feeble) |
| stupid(adjective, weak, idle, useless, incompetent) |
| void(adjective, inferior, inadequate, feeble, useless) |
| wasteful |
| failed(adjective, arouse bad feelings) |
| feckless(adjective, weak, stupid, inferior, idle) |