| unavailing(adjective, weak, inferior, inadequate, limited) |
| ungifted(adjective, educated, overall, well-informed) |
| unskillful(adjective, weak, awkward, inadequate, useless) |
| unsuitable(adjective, dull, flat, slow, awkward) |
| unsuited(adjective, dull, weak, flat, slow) |
| awkward(adjective, dull, flat, slow, inadequate) |
| bumbling(awkward, inept, bulky, ungainly) |
| bungling(adjective, awkward, inadequate, unqualified, inept) |
| crippled(adjective, weak, helpless, powerless, impotence) |
| feeble(adjective, weak, inferior, inadequate, limited) |
| frail(adjective, weak, helpless, powerless, irresolution) |
| fruitless(adjective, weak, inferior, inadequate, limited) |
| inexperienced(adjective, dull, weak, flat, slow) |
| inferior(inadequate, limited, feeble, useless, vain) |
| infirm(adjective, weak, feeble, vulnerable, forlorn) |
| maladjusted(incompetent, unqualified, inept, unprepared, ineligible) |
| not competent(expression, idiom) |
| otiose |
| querulous(adjective, annoyed, irritated, edgy, intolerant) |
| unadapted(inadequate, useless, inept, unskilled, unskillful) |