Meaning trap
mess up
make untidy
To make something disorganized or dirty; to make a place or thing messy.
Don't mix these meanings
Same phrase, different job.
To make something disorganized or dirty; to make a place or thing messy.
Another meaning of 'mess up' is 'make a mistake'; compare the examples to keep the meanings separate.
Hear it in context
Notice where the phrase sounds natural.
The kids messed up the living room with their toys.
When I share a room with my brother, he always messes up my side and it drives me crazy.
Fix the pattern
One small grammar move makes it sound right.
Not: Don't mess up with my desk.
Say: Don't mess up my desk.
'Mess up' + the place (no 'with'). ('Mess with' = interfere — a different meaning.)
Which sounds natural?
Tap the one a native speaker would say.
'Mess up' is the natural verb for making a place untidy; 'disarrange' is rare and formal.
Build natural chunks
Words that usually travel with it.
mess up + place/thing
- the room
- your hair
- the bed
- my papers
Don't confuse it
Related
Other meanings and phrases to compare.
- mess up (make a mistake) — Another meaning of 'mess up' is 'make a mistake'; compare the examples to keep the meanings separate.