| unconfirmed(adjective, void, meaningless, invalid, unsubstantiated) |
| undependable(adjective, uncertain, feeble, shaky, hesitant) |
| unenforceable(adjective, void, meaningless, invalid, unsubstantiated) |
| unfruitful(adjective, weak, inferior, inadequate, limited) |
| unproductive(adjective, weak, inferior, inadequate, limited) |
| unprofitable(adjective, inferior, inadequate, limited, feeble) |
| unratified(adjective, void, meaningless, invalid, unsubstantiated) |
| unsanctioned(adjective, void, meaningless, invalid, unsubstantiated) |
| unsteady(adjective, uncertain, feeble, shaky, hesitant) |
| unsubstantial(adjective, uncertain, feeble, shaky, hesitant) |
| unsuccessful(adjective, inferior, inadequate, limited, feeble) |
| useless(adjective, weak, inferior, inadequate, limited) |
| vain(adjective, inferior, inadequate, limited, feeble) |
| voided(adjective, meaningless, invalid, unsubstantiated, unsupported) |
| wavering(adjective, uncertain, feeble, shaky, hesitant) |
| weakened(adjective, uncertain, feeble, shaky, hesitant) |
| weakly(adjective, uncertain, feeble, shaky, hesitant) |
| wimpish |
| withered(adjective, inferior, inadequate, limited, feeble) |
| without any weight(expression, idiom) |