muss

To rumple, tousle or make (something) untidy.

The old man affectionately mussed his grandson's hair.

A mess (disagreeable mixture or confusion of things; disorder).

A scramble, as when small objects are thrown down, to be taken by those who can seize them; a confused struggle.

Authority melts from me: of late, when I cried 'Ho!' like boys unto a muss, kings would start forth, and cry 'Your will?' Have you no ears? I am Antony yet.

Gods so! a muss, a muss, a muss, a muss.

A term of endearment.