Mess up
Meaning: 1) to make something untidy or dirty, 2) to spoil something, or to do something badly
Example: 1) I hate wearing hats - they always mess up my hair. 2) Don't try to cook lunch by yourself - you'll only mess it up.
Example: 1) I hate wearing hats - they always mess up my hair. 2) Don't try to cook lunch by yourself - you'll only mess it up.
