Meaning of “cut sth up” - Learner’s Dictionary

cut sth up

phrasal verb with cut us uk /kʌt/ verb present participle cutting, past tense and past participle cut

B1 to cut something into pieces

be cut up UK informal

to be very upset about something:

He was very cut up when his brother died.

(Definition of “cut sth up” from the Cambridge Learner’s Dictionary © Cambridge University Press)