split on
phrasal verbPart ofsplit
split on — phrasal verb
1. To tell someone in authority about something bad that another person has done; t
1.phrasal verb
Definition
To tell someone in authority about something bad that another person has done; to betray someone's trust.
Example
Tom split on his friend to the teacher for cheating on the test.
Don't split on me, or I'll never trust you again.