# SI vs sit

> English confusable word pair

## The two words

### SI
*name · frequency rank #5,453*
International System of Units

### sit
*verb · IPA /sɪt/ · frequency rank #1,355*
To be in a position in which the upper body is upright and supported by the buttocks.

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