部屋 へや らかす
heyao chirakasu

Godan Verb (su)
Expression

1. to scatter a room (with things); to leave a room a mess; to leave things lying about

おとうと部屋 へやをちらかしっぱなしにしている。
otōtowa heyao chirakashippanashini shite iru.
My brother leaves his room in a mess.