muck up

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muck up

verb mucks up · mucking up · mucked up

informal, intransitive, transitive To ruin unintentionally. The terrorists have really mucked up our holiday plans.
Similar: mess up, blow it, bobble, boob, crap up, miscue, drop a bollock, drop the ball, err, flub, flub up, foul up
Australia, informal, 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.
Similar: muck about, muck around, fuck about, fuck around

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MLA

"muck up." Wiktionary, via Micwyn, micwyn.com/word/muck%20up. Accessed 6 Nov. 2026.

APA

muck up. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/muck%20up

Chicago

"muck up." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/muck%20up.

BibTeX

@misc{muck_up_2026,
  title = {muck up},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/muck%20up},
  urldate = {2026-11-06}
}