definition of
mess up

[1] #1 mess up v. make a mess of, destroy or ruin; "I botched the dinner and we had to eat out"; "the pianist screwed up the difficult passage in the second movement". wn

[2] #2 mess up v. disturb the smoothness of; "ruffle the surface of the water". wn

[3] #3 mess up v. make a mess of or create disorder in; "He messed up his room". wn