cut up
cut up phrasal verb (see also cut)
1. CUT INTO PIECES cut something ↔ up to cut something into small pieces:
Could you cut the pizza up, please?
cut something ↔ up into
He cut the paper up into little pieces.
2. DRIVING cut somebody/something ↔ up British English to suddenly drive in front of a moving vehicle in a dangerous way:
Some idiot cut me up on the motorway.
3. BEHAVE BADLY American English informal to behave in a noisy or rude way
4. cut up rough British English informal to react in an angry or violent way:
Careful how you approach him – he can cut up a bit rough if he’s got a mind to.
5. CRITICIZE cut somebody ↔ up informal to criticize someone in an unpleasant way
⇨ cut up
ˌcut ˈup 
, cut-up adjective [not before noun]
1. informal very upset about something that has happened
cut up about
He was very cut up about Stephen dying.
2. be badly cut up to have a lot of injuries because you have been in an accident or fight
| I |
cut up phrasal verb (see also cut)
1. CUT INTO PIECES cut something ↔ up to cut something into small pieces:
cut something ↔ up into
2. DRIVING cut somebody/something ↔ up British English to suddenly drive in front of a moving vehicle in a dangerous way:
3. BEHAVE BADLY American English informal to behave in a noisy or rude way
4. cut up rough British English informal to react in an angry or violent way:
5. CRITICIZE cut somebody ↔ up informal to criticize someone in an unpleasant way
⇨ cut up
| II |
, cut-up adjective [not before noun]1. informal very upset about something that has happened
cut up about
2. be badly cut up to have a lot of injuries because you have been in an accident or fight