(informal, transitive) To ruin unintentionally. / (informal, Australia, intransitive) To clown around; to have fun, often at the expense of others.

To muck about.

(transitive) To clean the excrement and other rubbish from the area where an animal is kept, such as a horse stable or a dog kennel.

plural of muckety muck

To remove muck or dirt from.

present participle of muck about

simple past tense and past participle of muck about

Third-person singular simple present indicative form of muck about

plural of mucky muck

plural of muckety-muck