# mu

> English word · Noun · IPA /mjuː/ · frequency rank #11,427

## Definitions
1. The 12th letter of the Modern Greek alphabet.

## Etymology
From Ancient Greek μῦ (mû), derived from Phoenician 𐤌𐤌 (mm /⁠mem⁠/, “water”). Doublet of mem.

## Easily confused with
- **my** (https://plainspell.com/en/vs/mu-vs-my)
- **MW** (https://plainspell.com/en/vs/mu-vs-mw)
- **MV** (https://plainspell.com/en/vs/mu-vs-mv)
- **Mx** (https://plainspell.com/en/vs/mu-vs-mx)
- **mum** (https://plainspell.com/en/vs/mu-vs-mum)
- **MUD** (https://plainspell.com/en/vs/mu-vs-mud)
- **MVP** (https://plainspell.com/en/vs/mu-vs-mvp)
- **mug** (https://plainspell.com/en/vs/mu-vs-mug)
- **mun** (https://plainspell.com/en/vs/mu-vs-mun)
- **Mya** (https://plainspell.com/en/vs/mu-vs-mya)
- **muh** (https://plainspell.com/en/vs/mu-vs-muh)
- **MUA** (https://plainspell.com/en/vs/mu-vs-mua)
- **much** (https://plainspell.com/en/vs/mu-vs-much)
- **must** (https://plainspell.com/en/vs/mu-vs-must)
- **mute** (https://plainspell.com/en/vs/mu-vs-mute)
- **muse** (https://plainspell.com/en/vs/mu-vs-muse)
- **musk** (https://plainspell.com/en/vs/mu-vs-musk)
- **mule** (https://plainspell.com/en/vs/mu-vs-mule)
- **mums** (https://plainspell.com/en/vs/mu-vs-mums)
- **muir** (https://plainspell.com/en/vs/mu-vs-muir)

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