# onrush

> English word · Noun · IPA /ˈɒnˌɹʌʃ/

## Definitions
1. A forceful rush or flow forward.
2. An aggressive assault.

## Etymology
From on- + rush. Compare Middle English onresen (“to rush upon; attack”), from Old English onrǣsan (“to rush, rush on”); Old English onrǣs (“an onrush, assault, attack”).

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