| impotent(adjective, weak, inadequate, unfit, unqualified) |
| inadequate(adjective, weak, unfit, unqualified, unable) |
| incompetent(noun, adjective, weak, rude, fool) |
| ineffective(adjective, weak, inadequate, unfit, unqualified) |
| inefficient(adjective, incompetent, clumsy, inexpert) |
| ineligible(adjective, weak, inadequate, unfit, unqualified) |
| inexperienced(adjective, weak, inadequate, unfit, unqualified) |
| inexpert(adjective, weak, rude, inadequate, useless) |
| inproficient(adjective, weak, awkward, inadequate, unfit) |
| insufficient(adjective, weak, inadequate, unfit, unqualified) |
| klutzy(adjective, awkward, clumsy, inelegant, graceless) |
| losing(adjective, weak, inadequate, unfit, unqualified) |
| lumbering(clumsy, inelegant, graceless) |
| lump |
| mismanager(fool, incompetent, butcher) |
| muddler(fool, incompetent, butcher) |
| muff |
| naive(adjective, weak, inadequate, unfit, unqualified) |
| not equal to(expression, adjective, idiom, weak, inadequate) |
| not up to(expression, adjective, idiom, weak, inadequate) |