# sourness

> English word · Noun · frequency rank #89,927

## Definitions
1. The condition or quality of being sour.

## Etymology
From Middle English sowrenesse, sournesse, from Old English sūrnes (“sourness”), equivalent to sour + -ness.

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