# mu vs mull

> English confusable word pair

## The two words

### mu
*noun · IPA /mjuː/ · frequency rank #11,427*
The 12th letter of the Modern Greek alphabet.

### mull
*verb · IPA /mʌl/ · frequency rank #31,263*
To work (over) mentally; to cogitate; to ruminate.

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