# run up on

> English word · Verb

## Definitions
1. To approach with speed or forceful intensity
2. To confront with hostility
3. To hit on (somebody).

## Etymology
From run up + on.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/run-up-on