| unprofessional(adjective, immoral, unprincipled, inexpert, unethical) |
| unpromising(adjective, poor, small, insignificant, unimportant) |
| unskilled(adjective, weak, useless, unfit, unqualified) |
| unskillful(adjective, weak, useless, unfit, unqualified) |
| untenable(adjective, useless, unfit, unacceptable) |
| unworkable(adjective, useless, impractical, hopeless, unusable) |
| unworthy(adjective, bad, poor, offensive, mediocre) |
| vain(adjective, weak, inferior, short, limited) |
| vile(adjective, mean, bad, poor, nasty) |
| void(adjective, poor, small, insignificant, unimportant) |
| wiry(adjective, poor, thin, small, spare) |
| abortive(limited, feeble, useless, impractical, hopeless) |
| amateur(adjective, useless, improper, incompetent, unqualified) |
| amateurish(useless, immoral, inept, incomplete, unable) |
| appalling(sad, unhappy, sorrowful) |
| awkward(adjective, useless, unsuitable, unqualified, inept) |
| baneful(adjective, bad) |
| base(adjective, mean, bad, weak, poor) |
| beggarly(adjective, mean, poor, low, miserable) |
| broken(adjective, deficient, substandard, incomplete, imperfect) |