good-for-nothing

名词 good-for-nothing:

1. an idle worthless person
   同义词：goldbrick, goof-off, ne'er-do-well, no-account, good-for-naught

形容词 good-for-nothing:

1. without merit
   同义词：good-for-naught, meritless, no-account, no-count, no-good, sorry

1. Where's that good-for-nothing son of yours?
   你那个废物儿子在哪儿呢?

good-for-noth.ing

n.（名词）
A person of little worth or usefulness.
饭桶：没有价值或没有用处的人
adj.（形容词）
Having little worth; useless.
无用的；没有价值的