# one and the same

> English word · Determiner

## Definitions
1. The selfsame. Used to emphasize the identity or equivalence of two things.

## Etymology
Possibly a calque of Latin unus et idem.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/word/one-and-the-same