If you have tousled hair, it is untidy and looks as if it has not been brushed or combed.
英英词典释义
Adjective
1. in disarray; extremely disorderly;
"her clothing was disheveled""powder-smeared and frowzled""a rumpled unmade bed""a bed with tousled sheets""his brown hair was tousled, thick, and curly"- Al Spiers