muck up
The phrase "muck up" is commonly used in informal British English to describe ruining or making a mess of something, either intentionally or unintentionally.
Definition
B2General
(informal)To ruin or spoil something through incompetence or carelessness.
Example
- He completely mucked up his English exam.
B2Planning
(informal)To cause a plan or arrangement to fail.
Example
- They mucked up our order, so it won't be ready until next week.
B2Cleaning
(informal)To make something dirty or messy.
Example
- Don't muck up my clean floor with your dirty shoes.
B2Australia
(informal, regional)To clown around or have fun, often at the expense of others.
Example
- The kids were mucking up in class instead of paying attention.
Similar
Terms that have similar or relatively close meanings to "muck up":
mess upfoul upscrew upgoof upbugger upmuddle upmuddy upstuff upmuck aboutmuss upmess aboutmist upmessed upbotched upbug upmix upgum upscuzz upscrewed upmess withjumble upstink upmess aroundfuck it upfuckered uptrip upscrew aroundsnarl uprumple uprough upruffle upfix uppiss something up the wallmash uphack upcack upjam upfucked upstick one's foot in itstuffed updick aroundfoul one's own nestmop upscrew withsmell upsnot updo updust upruck upcrap uptear upstew upgo wrongrucked upjumble togetheract upfool aroundmix it upmug upcome a cropperfog up