# cis, sis

> English homophone group · 2 words that sound the same · /sɪs/

These English words share one pronunciation but differ in spelling and meaning.

## The words

### cis
*/sɪs/*
Having two mutations on two genes on the same chromosome of a homologous pair.

### sis
*/sɪs/*
Clipping of sister.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA); groups derived from IPA pronunciation. Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/homophones/cis