unworkmanlike (adjective) unworkmanlike: inefficient
Sinonime: can't hack it,
careless,
disorganized,
extravagant,
faulty,
feeble, half-baked, improficient, improvident, inapt,
incapable,
incompetent,
ineffective,
ineffectual, inefficacious,
inept, inexpert, not cut out for,
prodigal, shooting blanks,
slack, slipshod,
sloppy*, slovenly, unfit, unprepared, unqualified, unskilled, unskillful, untrained,
weak