intransitive. To turn away, separate (from a spouse).

To discard, reject; esp. (as Latin dīmittĕre) to put away, repudiate (a wife). Also absol.

intransitive. To become unmarried; to dissolve one's marriage; to obtain a divorce.

intransitive (for reflexive)

To withdraw from conjugal cohabitation.

transitive. to part beds: to cease to live together as husband and wife; to separate. Now rare.

To violate, do violence to; to fail to observe or keep; to transgress. (The opposite of to keep sacred… †to break spousehood (Middle English), to bre…

With up. intransitive. = to break up at break, v. additions.

to break up. intransitive. Of an individual: to end a romantic relationship with another. Also (of a couple): to cease to be in a relationship…

slang (originally and chiefly U.S.). Of a couple: to become divorced; to separate.

As away, down, off, out, up. In intransitive senses. With out: also slang, to quarrel; to part company; to take one's leave (cf. sense 15 above)…

intransitive. Of a couple: to separate at the end of a relationship; to ‘split up’. Occasionally reflexive. colloquial.