ダメ男
also: だめお · ダメおとこ · だめおとこ
Meanings
1
loser guy; no-good man
Colloquial, often derogatory term for a man who is unreliable, irresponsible, or a failure in life, especially in romantic contexts.
He's a no-good guy who just gambles without working.
You were right to break up with that loser.