# sik vs sill

> English confusable word pair

## The two words

### sik
*adjective · frequency rank #40,893*
Alternative form of sick (“cool, excellent”).

### sill
*noun · IPA /sɪl/ · frequency rank #29,086*
A breast wall; window breast; horizontal brink which forms the base of a window.

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