# cipher vs cypher

> English confusable word pair

## The two words

### cipher
*noun · IPA /ˈsaɪfə/ · frequency rank #24,701*
A numeric character.

### cypher
*noun · frequency rank #36,948*
Alternative spelling of cipher.

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