| rescind |
| scrambled |
| second-rate(adjective, slight, lower, value, inferior) |
| senseless |
| set aside(verb, expression, adjective, phrasal verb, meaningless) |
| shoestring(adjective, slight, lower, value, inferior) |
| slight(adjective, lower, value, inferior, insignificant) |
| spectral(adjective, unsubstantial) |
| spineless(inferior, inadequate, limited, feeble, useless) |
| sterile(adjective, meaningless, invalid, unsubstantiated, unsupported) |
| tenuous(adjective, unsubstantial) |
| trifling(adjective, slight, lower, value, inferior) |
| unable(inferior, inadequate, limited, feeble, useless) |
| unconcrete(adjective, unsubstantial) |
| unconfirmed(adjective, meaningless, invalid, unsubstantiated, unsupported) |
| unenforceable(adjective, worthless, unacceptable, meaningless, invalid) |
| unfruitful(adjective, inferior, inadequate, limited, feeble) |
| unmeaning |
| unnecessary(adjective, slight, lower, value, inferior) |
| unproductive(inadequate, limited, feeble, useless, vain) |