# fo

> English word · Noun · frequency rank #12,049

## Definitions
1. Abbreviation of folio, page and book size (10"-12.5" x 15"-20").

## Etymology
Clipping of folio.

## Easily confused with
- **fu** (https://plainspell.com/en/vs/fo-vs-fu)
- **FS** (https://plainspell.com/en/vs/fo-vs-fs)
- **FP** (https://plainspell.com/en/vs/fo-vs-fp)
- **FW** (https://plainspell.com/en/vs/fo-vs-fw)
- **fy** (https://plainspell.com/en/vs/fo-vs-fy)
- **for** (https://plainspell.com/en/vs/fo-vs-for)
- **fun** (https://plainspell.com/en/vs/fo-vs-fun)
- **fox** (https://plainspell.com/en/vs/fo-vs-fox)
- **fur** (https://plainspell.com/en/vs/fo-vs-fur)
- **fog** (https://plainspell.com/en/vs/fo-vs-fog)
- **fry** (https://plainspell.com/en/vs/fo-vs-fry)
- **FYI** (https://plainspell.com/en/vs/fo-vs-fyi)
- **foe** (https://plainspell.com/en/vs/fo-vs-foe)
- **foo** (https://plainspell.com/en/vs/fo-vs-foo)
- **fro** (https://plainspell.com/en/vs/fo-vs-fro)
- **FTC** (https://plainspell.com/en/vs/fo-vs-ftc)
- **FSA** (https://plainspell.com/en/vs/fo-vs-fsa)
- **fob** (https://plainspell.com/en/vs/fo-vs-fob)
- **fra** (https://plainspell.com/en/vs/fo-vs-fra)
- **FTP** (https://plainspell.com/en/vs/fo-vs-ftp)

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