| unproductive(adjective, flat, poor, base, silly) |
| useless(adjective, weak, flat, poor, base) |
| fruitless(adjective, flat, silly, stupid, inadequate) |
| futile(adjective, flat, poor, base, stupid) |
| profitless(adjective, gain, flat, poor, base) |
| worthless(adjective, gain, poor, base, value) |
| unavailing(adjective, poor, base, silly, stupid) |
| vain(adjective, flat, stupid, inadequate, limited) |
| barren(adjective, flat, poor, base, inferior) |
| bootless(adjective, weak, inferior, inadequate, feeble) |
| ineffective(adjective, poor, base, silly, stupid) |
| pointless(adjective, poor, base, inferior, insignificant) |
| sterile(adjective, poor, clean, base, inferior) |
| unsuccessful(adjective, gain, inferior, inadequate, feeble) |
| unfruitful(adjective, inadequate, feeble, useless, bleak) |
| abortive(adjective, weak, inferior, feeble, useless) |
| ineffectual(adjective, poor, base, silly, stupid) |
| idle(adjective, weak, inferior, feeble, useless) |
| inutile(adjective, poor, base, stupid, inferior) |
| empty(adjective, poor, base, inferior, insignificant) |