run up on
Come upon unexpectedly
Run up on means to approach someone suddenly or aggressively, often with hostile intent: He ran up on me outside the club.
In street slang, it can imply confrontation or the threat of violence—approaching someone to rob, fight, or intimidate them: Don't run up on me like that.
The phrase emphasizes the quickness and unexpectedness of the approach.
- roll upGather into a cylinder
- accostApproach someone boldly
- grabSeize abruptly
- rushQuick sudden movement
- chaseRapid following of quarry
slide up · sneak · blindside · come at · pull up · roll through · approach · creep up · pounce · challenge · confront · ambush · corner · provoke · throw hands · shove · charge · intimidate
run up onwelcome
Hospitable greeting offered
embrace · protect · defend · look out for · have someone's back
run up onleave alone
Refrain from disturbing
mind one's business · keep the peace · stand down · back off · let be
run, runs, running, runner, runners, runny, upping, uppers, uppermost