režati

1. (of an animal) to growl
   Pas reži svaki put kad neko priđe kapiji. — The dog growls every time someone comes to the gate.
2. colloq. (of a person, na + acc.) to snarl; to snap
   Što režiš na mene od jutros? — Why have you been snapping at me since this morning?

At someone: režati na nekoga.