muss
verb (North American English)- muss something (up)
to make somebody’s clothes or hair untidy 弄乱(衣服或头发);使邋遢 Oxford Collocations DictionaryMuss is used with these nouns as the object:- hair
Word Originmid 19th cent. (also as a noun in the sense ‘disturbance or row’): apparently a variant of mess.