# mou vs MUD

> English confusable word pair

## The two words

### mou
*particle · frequency rank #25,145*
Sentence-final particle, forms a tag question.

### MUD
*noun · IPA /mʌd/ · frequency rank #5,815*
Acronym of multi-user dungeon, an interactive online environment in which players may jointly engage in fantasy role-playing games.

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