Similar Words to Muck Up:
Ball Up
Blow
Bobble
Bodge
Bollix
Bollix Up
Bollocks
Bollocks Up
Botch
Botch Up
Bumble
Bungle
Flub
Fluff
Foul Up
Fuck Up
Fumble
Louse Up
Mess Up
Mire
Mishandle
Muck
Mud
Muff
Screw Up
Spoil
Examples:
1. Muck and filth everywhere, Mr. Warrick. It's like a pigsty!
Definitions of Muck up:
1. Make a mess of, destroy or ruin
2. Soil with mud, muck, or mire