break up

verb
RareNot in standard dictionaries
1

To break or separate into pieces.

2

To break or separate into pieces; to disintegrate or come apart.

3

To upset greatly; to cause great emotional disturbance or unhappiness in.

4

To end a (usually romantic or sexual) relationship.

5

To end a (usually romantic or sexual) relationship with each other.

6

To dissolve; to part.

7

Of a school, to close for the holidays at the end of term.

8

Of a conversation, to cease to be understandable because of a bad connection; of a signal, to deteriorate.

9

To stop a fight; to separate people who are fighting.

10

To become disorganised.

#slang