# fie vs fo

> English confusable word pair

## The two words

### fie
*intj · IPA /faɪ/ · frequency rank #45,929*
Sometimes followed by on or upon: used to express distaste, disgust, or outrage.

### fo
*noun · frequency rank #12,049*
Abbreviation of folio, page and book size (10"-12.5" x 15"-20").

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/fie-vs-fo