# sigma vs simi

> English confusable word pair

## The two words

### sigma
*noun · IPA /ˈsɪɡmə/ · frequency rank #14,835*
The eighteenth letter of the Classical and Modern Greek alphabets (Σ, σ), the twentieth letter of Old and Ancient.

### simi
*pronoun · IPA [si˦mi˦˨] · frequency rank #37,223*
What?; what is this […] ?; what […] are you talking about?

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