Bedeutung von “mess sth up” — Learner’s Dictionary

mess sth up

phrasal verb with mess us uk /mes/ verb

to make something untidy or dirty:

I hate wearing hats - they always mess up my hair.

B2 to spoil something, or to do something badly:

Don't try to cook lunch by yourself - you'll only mess it up.

(Definition von “mess sth up” aus dem Cambridge Learner's Dictionary © Cambridge University Press)