run up on
Third Person
runs up on
Present Participle
running up on
Past Tense
ran up on
Past Participle
run up on
1
to unexpectedly and aggressively confront someone
- He ran up on his rival at the party and started a heated argument.
- The angry customer ran up on the store manager, demanding a refund.
- In a fit of anger, he ran up on his coworker and accused them of stealing his ideas.
- The fan ran up on the opposing team's coach, expressing dissatisfaction with the game's outcome.
- The rival gang members ran up on each other in a tense neighborhood confrontation.