godan verb (-ru), intransitive verb
act rough; get wild; go on a rampage
Colloquial intransitive verb. Describes a person or group behaving violently, running wild, or causing a ruckus. Often used for rowdy behavior, brawls, or rampages.
酔っ払いが店の中で荒ぶって、大変だった。
A drunk got wild inside the store and it was a mess.
試合に負けたサポーターが街で荒ぶった。
Fans who lost the match went on a rampage in the streets.