| incompetent(adjective, weak, ability, poor, stupid) |
| awkward(adjective, good, dull, sharp, ability) |
| inefficient(adjective, weak, ability, inadequate, limited) |
| unfit(adjective, dull, weak, agree, wrong) |
| clumsy(adjective, dull, weak, simple, sharp) |
| maladroit(adjective, dull, ability, flat, awkward) |
| incapable(adjective, weak, ability, inadequate, useless) |
| ineffective(adjective, weak, poor, stupid, idle) |
| unskilled(adjective, dull, weak, ability, flat) |
| inapt(adjective, dull, agree, ability, flat) |
| inappropriate(adjective, good, dull, agree, wrong) |
| bungling(adjective, awkward, inadequate, incompetent, unqualified) |
| unsuitable(adjective, dull, agree, wrong, flat) |
| gauche(adjective, dull, ability, rough, incompetent) |
| half-assed |
| ineffectual(adjective, weak, poor, stupid, idle) |
| inexpert(adjective, dull, weak, ability, flat) |
| unskillful(adjective, weak, ability, awkward, inadequate) |
| unqualified(adjective, weak, poor, inadequate, useless) |
| unable(adjective, dull, weak, flat, slow) |