Violent
Violence, Assault
noun, verbal noun, な adjective
Riot and violence. That sounds terrible! That sounds like a place full of violence, because rioting is violent and violence is violent too!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
どこでそんな乱暴な言葉を覚えてきたの？
Where did you learn such violent language?
クラスに一人、ちょっと乱暴な子がいるみたいなんだよね。
There seems to be one kid in the class who is a little rough around the edges.
みんなが乱暴にするから、すぐにボロボロになっちゃうのよ。
Everyone is so rough with them, they get tattered so quickly.