Noun split up has 1 sense
  1. split, stock split, 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"
    --1 is a kind of increase, step-up
,Verb split up has 4 senses
  1. divorce, split up - get a divorce; formally terminate a marriage; "The couple divorced after only 6 months"
    --1 is one way to separate, part, split up, split, break, break up
    Sample sentence:
    Sam and Sue split up
  2. divide, split, split up, separate, dissever, carve up - separate into parts or portions; "divide the cake into three equal parts"; "The British carved up the Ottoman Empire after World War I"
    --2 is one way to change integrity
    Sample sentences:
    Somebody ----s something
    Somebody ----s somebody
    Something ----s somebody
    Something ----s something
  3. separate, part, split up, split, break, break up - 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"
    Sample sentence:
    Somebody ----s
  4. break, separate, split up, fall apart, come apart - become separated into pieces or fragments; "The figurine broke"; "The freshly baked loaf fell apart"
    --4 is one way to change integrity
    Sample sentence:
    Something ----s
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