# flu vs fu

> English confusable word pair

## The two words

### flu
*noun · IPA /fluː/ · frequency rank #7,564*
Influenza.

### fu
*intj · frequency rank #8,543*
Initialism of fuck you.

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