# sei vs sim

> Spanish confusable word pair

## The two words

### sei
*num · IPA /s̺ej/ · frequency rank #48,072*
Seis.

### sim
*verb · IPA /ˈsim/ · frequency rank #14,009*
Primera persona del singular del presente activo de subjuntivo de sum.

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