Inept
adjective
revealing lack of perceptiveness or judgment or finesse
“an inept remark”
Similar: tactless
adjective
not elegant or graceful in expression
“an awkward prose style”
Similar: awkward, clumsy, cumbersome, inapt
adjective
generally incompetent and ineffectual
“feckless attempts to repair the plumbing”
Similar: feckless
Word family
ineptness · ineptly