# 1D vs 1st

> French confusable word pair

## The two words

### 1D
*adjective · IPA \ˈaɪ̯nˈdeː\ · frequency rank #48,884*
À une dimension, monodimensionnel / unidimensionnel : eindimensional.

### 1st
*adjective · IPA \ˈfɝst\ · frequency rank #47,124*
Abréviation de first. Premier, 1ᵉʳ.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/fr/vs/1d-vs-1st