good-for-nothing

nouns

an idle worthless person
goldbrick, good-for-naught, good-for-nothing, goof-off, ne'er-do-well, no-account

adjectives

without merit
"a sorry horse"; "a sorry excuse"; "a lazy no-count, good-for-nothing goldbrick"; "the car was a no-good piece of junk"
good-for-naught, good-for-nothing, meritless, no-account, no-count, no-good, sorry