# MRP vs MUD

> English confusable word pair

## The two words

### MRP
*noun · frequency rank #44,352*
Initialism of machine-readable passport.

### 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/mrp-vs-mud