이자식

you bastard, this guy

이 Forms nouns or adverbs, often meaning ‘person or thing characterized by’ or ‘in a manner or degree of’ + 자식 bastard
noun Rare #30,114
you bastard, this guy Colloquial and insulting; often used when addressing someone in anger or exasperation. Standard spacing is 이 자식.
KO: 이자식, 또 늦었네.
EN: You bastard, you're late again.

이자식!

This bastard!

일어나 이자식.

Wake up, you son of a bitch.

— 조조 래빗 (2019)

“넌 이자식, 왜 또 이래 응?”

You little punk, why are you acting like this again, huh?