Meaning 1 · most common
end a relationship
When two people split up, they stop being a couple or end their romantic relationship.
Examples
After dating for three years, they decided to split up.
A: Have you seen Emma lately?
B: No, she and Tom split up last month, so she's been keeping to herself.
Common mistake
Not: She split up her boyfriend.
Say: She split up with her boyfriend.
You split up WITH someone — don't drop 'with'.
More on “end a relationship”Another example · Tell it apart · Goes with · Tip
Another example
I think it's normal for some couples to split up if they have very different goals in life.
Tell it apart
The couple split up.
The class split up into teams.
Goes with
- split up + with