muck up
verb
Forms mucks up mucking up mucked up
- verb (informal, transitive, intransitive) To ruin unintentionally. “The terrorists have really mucked up our holiday plans.”
- verb (informal, Australia, intransitive) To clown around; to have fun, often at the expense of others. “It's the last day of school and everyone is mucking up.”
Synonyms
mess up blow it bobble boob crap up miscue drop a bollock drop the ball err flub flub up foul up fuck up goof goof up make a mistake misdo misstep put a foot wrong screw up botch bodge bumble fumble botch up muff blow ball up spoil bungle
Sources: Wiktionary · WordNet 3.0 — from the Wiktionary entry “muck up”, CC BY-SA 4.0. Details