ろくでなし

noun

good-for-nothing; bum; ne'er-do-well

A derogatory term for a worthless or lazy person; often used in casual, critical speech.

• あいつは本ほん当とうにろくでなしだ。

  That guy is a real good-for-nothing.

• ろくでなしの息子むすこに手てを焼やいている。

  I'm at my wits' end with my good-for-nothing son.