informal Do something badly or ineptly; mishandle something: she had mucked up her first few weeks at college
More example sentences
- I guess we have to wait for the mainstream media to muck things up this badly.
- I get scared that I shall muck something up badly, so I tend not to volunteer for things.
- One of the hardest things we ever have to learn is that you can't lead other people's lives for them, however intent they seem on mucking them up.
Definition of muck something up in:
- The English Synonyms