| imperceptible(adjective, calm, dull, quiet, weak) |
| insignificant(adjective, weak, poor, small, miserable) |
| namby-pamby(adjective, weak, soft, mediocre, indecisive) |
| run-down(adjective, weary, exhausted, limp, weakened) |
| senile(adjective, physical, uncertain, frail, puny) |
| subdued(adjective, calm, dull, quiet, weak) |
| unsatisfactory(adjective, weak, poor, miserable, inferior) |
| vague(adjective, dull, weak, soft, gentle) |
| vulnerable(adjective, weak, delicate, inert, infirm) |
| wasted(adjective, weak, uncertain, weary, frail) |
| wishy-washy(adjective, dull, light, weak, soft) |
| chicken(adjective, characteristic, strong, weak, weakness) |
| declining(adjective, mean, bad, weak, delicate) |
| fainthearted(adjective, nervous, shy, fearful, ambivalent) |
| flaccid(adjective, weak, weakness, loose, uncertain) |
| half-baked(incompetent, wasteful, unproductive) |
| hazy(adjective, dull, weak, soft, gentle) |
| imperfect(adjective, mean, bad, weak, poor) |
| invalid(adjective, mean, weak, sick, green) |
| listless(adjective, dull, weak, easy, slow) |