muck up

Found in Anh - Anh (Wordnet)

Definition Verb (transitive) : To make something dirty, especially with mud, muck, or a similar substance. To ruin, spoil, or make a mess of something; to perform a task very poorly. Examples of Usage Verb : Be careful not to muck up your new shoes in that muddy field. I completely mucked up the presentation by forgetting my main points. He mucked up the engine when he tried to fix it himself....