| feckless(adjective, dull, weak, little) |
| flaccid(adjective, weak, weakness, uncertain, feeble) |
| gutless(adjective, weak, inadequate, incompetent, inept) |
| inept(adjective, weak, inferior, inadequate, limited) |
| languid(adjective, weak, thin, delicate, uncertain) |
| limp(adjective, uncertain, feeble, frail, puny) |
| passive(adjective, weak, unable) |
| rickety(adjective, uncertain, feeble, frail, puny) |
| run-down(adjective, feeble) |
| strengthless(adjective, weak, weakness, thin, delicate) |
| supine(adjective, weak, uncertain, feeble, frail) |
| unprotected(adjective, weak, feeble, vulnerable, insecure) |
| weakly(adjective, weak, weakness, thin, delicate) |
| airy |
| blank(adjective, weak, unable) |
| defenceless |
| delicate(adjective, weak, thin, uncertain, feeble) |
| dependent(adjective, weak, unable) |
| dull |
| enervated(adjective, weak, thin, delicate, uncertain) |