# yesterday but one

> English word · Adverb

## Definitions
1. Day before yesterday.

## Etymology
From yesterday + but (“except for”) + one https://www.observer.ug/lifestyle/42-entertainment/44856-kataaha-has-to-sort-out-the-cracks-in-english

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