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general::
Phrase(s): split up (with someone)
[for someone] to separate from someone; to break up a marriage or love affair. • Jeff split up with Judy. • I had heard that they had split up with each other., Phrase(s): split someone or something up (into something)
to divide people or things up into something, such as groups. • I had to split the group up into two sections—there were so many who showed up. • I split up the class into two discussion sections.
McGrawhill's American Idioms And Phrasal Verbs