| lightweight |
| limited(adjective, inferior, inadequate, feeble, useless) |
| low |
| makeshift(adjective, uncertain, feeble, shaky, hesitant) |
| meaningless(adjective, invalid, unsubstantiated, unsupported, annulled) |
| negated(adjective, meaningless, invalid, unsubstantiated, unsupported) |
| neutralized(adjective, inferior, inadequate, limited, feeble) |
| no-account |
| no go(expression, adjective, inadequate, limited, feeble) |
| no way(expression, adjective, inadequate, limited, feeble) |
| not effective(expression, adjective, inadequate, limited, feeble) |
| not strong(expression, adjective, weak, uncertain, feeble) |
| not viable(expression, adjective, void, meaningless, invalid) |
| nugatory(adjective, inferior, inadequate, limited, feeble) |
| null(adjective, inferior, inadequate, limited, feeble) |
| null and void(expression, adjective, idiom, inferior, inadequate) |
| nullified(adjective, void, meaningless, invalid, unsubstantiated) |
| of no account(expression, idiom) |
| out of gas(expression, adjective, idiom, weak, uncertain) |
| paltry(adjective, inferior, inadequate, limited, feeble) |