| awkward |
| bad(adjective, useless, void, unsound, unfit) |
| bungling(adjective, incompetent, wasteful, unproductive) |
| clumsy |
| cowardly(adjective, weak, soft, feeble, mediocre) |
| dead(adjective, meaningless, invalid, unsubstantiated, unsupported) |
| deficient(adjective, poor, inadequate, ineffectual, toothless) |
| dud(adjective, weak, inadequate, useless, incompetent) |
| dysfunctional(weak, stupid, idle, useless, incompetent) |
| enfeebled(adjective, weak, inadequate, incompetent, inept) |
| frustrate |
| half-hearted |
| ill-suited(adjective, inadequate, useless, inappropriate, unfit) |
| implausible(adjective, poor, inadequate, ineffectual, toothless) |
| improper(adjective, inadequate, useless, inappropriate, unfit) |
| inane |
| inapplicable(adjective, inadequate, useless, inappropriate, unfit) |
| inappropriate(adjective, inadequate, useless, unfit, unsuitable) |
| incapacitated(adjective, weak, inadequate, useless, unfit) |
| inconclusive(adjective, poor, inadequate, ineffectual, toothless) |