muss up

muss up

To cause something to become disheveled or untidy, especially one's hair. A noun or pronoun can be used between "muss" and "up." I just spent an hour getting my hair exactly how I want it, so don't go mussing it up like that! Please don't muss up your hair before you get your pictures taken for school.
See also: up
Farlex Dictionary of Idioms.

muss someone or something up

to put someone or something into disarray. Don't muss me up! You mussed up my hair. I'm afraid I mussed myself up a little.
See also: up
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • adapt (something) to (something)
  • adapt to
  • involve with
  • involve with (someone or something)
  • involved with
  • arrange for
  • arrange for some time
  • arrange some music for
  • back into
  • back into (someone or something)