To break up

To separate into parts; to plow (new or fallow ground).
To dissolve; to put an end to.
- Shak.

See also: Break, Break

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
If you can, message her, and explain what you are feeling, and be clear that you may have been an idiot, who didnt want to break up.
The soprano, who has since been linked to Irish rugby star Rob Kearney, 26, has always refused to spill the beans on what caused them to break up.
The decision to break up was a tough one, and she admits that she forced herself out on the town, as she attempted to kickstart the healing process.