split up

an increase in the number of outstanding shares of a corporation without changing the shareholders'' equity

• “they announced a two-for-one split of the common stock”

get a divorce; formally terminate a marriage

• “The couple divorced after only 6 months”

separate into parts or portions

• “divide the cake into three equal parts”
• “The British carved up the Ottoman Empire after World War I”

discontinue an association or relation; go different ways

• “The business partners broke over a tax question”
• “The couple separated after 25 years of marriage”
• “My friend and I split up”

become separated into pieces or fragments

• “The figurine broke”
• “The freshly baked loaf fell apart”