# supergrass

> English word · Noun · IPA /ˈs(j)uːpə(ɹ)ˌɡɹɑːs/ · frequency rank #95,474

## Definitions
1. An informer providing substantial quantities of information on criminal or terrorist activities to the police.

## Etymology
From super- + grass, from grass (“an informer”).

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