# flu

> English word · Noun · IPA /fluː/ · frequency rank #7,564

## Definitions
1. Influenza.
2. Stomach flu.

## Etymology
Clipping of influenza.

## Easily confused with
- **FM** (https://plainspell.com/en/vs/flu-vs-fm)
- **fu** (https://plainspell.com/en/vs/flu-vs-fu)
- **fo** (https://plainspell.com/en/vs/flu-vs-fo)
- **FS** (https://plainspell.com/en/vs/flu-vs-fs)
- **FN** (https://plainspell.com/en/vs/flu-vs-fn)
- **FP** (https://plainspell.com/en/vs/flu-vs-fp)
- **FW** (https://plainspell.com/en/vs/flu-vs-fw)
- **fy** (https://plainspell.com/en/vs/flu-vs-fy)
- **for** (https://plainspell.com/en/vs/flu-vs-for)
- **fun** (https://plainspell.com/en/vs/flu-vs-fun)
- **fly** (https://plainspell.com/en/vs/flu-vs-fly)
- **fox** (https://plainspell.com/en/vs/flu-vs-fox)
- **fur** (https://plainspell.com/en/vs/flu-vs-fur)
- **fog** (https://plainspell.com/en/vs/flu-vs-fog)
- **fry** (https://plainspell.com/en/vs/flu-vs-fry)
- **FYI** (https://plainspell.com/en/vs/flu-vs-fyi)
- **foe** (https://plainspell.com/en/vs/flu-vs-foe)
- **foo** (https://plainspell.com/en/vs/flu-vs-foo)
- **fro** (https://plainspell.com/en/vs/flu-vs-fro)
- **FTC** (https://plainspell.com/en/vs/flu-vs-ftc)

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