# LMFAO

> English word · Interjection · frequency rank #18,358

## Definitions
1. Initialism of laughing my fucking ass (arse) off More emphatic form of LMAO.

## Etymology
LMAO with an additional F meaning fucking.

## Easily confused with
- **Lao** (https://plainspell.com/en/vs/lao-vs-lmfao)
- **LMAO** (https://plainspell.com/en/vs/lmao-vs-lmfao)
- **liao** (https://plainspell.com/en/vs/liao-vs-lmfao)

## Common misspellings (7)
`lfmao`, `llmfao`, `lmafo`, `lmffao`, `lmfoa`, `lmmfao`, `mlfao`

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