# AF

> English word · Noun · IPA /eɪ̯ˈɛf/ · frequency rank #7,413

## Definitions
1. Initialism of air force.
2. Initialism of alternative fact.
3. Initialism of atrial fibrillation or auricular fibrillation.
4. Initialism of autofocus.
5. Initialism of adult female.
6. Initialism of auditory feedback.
7. Initialism of as found, also af, a/f.
8. Initialism of aggression factor.

## Easily confused with
- **as** (https://plainspell.com/en/vs/af-vs-as)
- **at** (https://plainspell.com/en/vs/af-vs-at)
- **an** (https://plainspell.com/en/vs/af-vs-an)
- **AM** (https://plainspell.com/en/vs/af-vs-am)
- **AL** (https://plainspell.com/en/vs/af-vs-al)
- **ah** (https://plainspell.com/en/vs/af-vs-ah)
- **AP** (https://plainspell.com/en/vs/af-vs-ap)
- **ai** (https://plainspell.com/en/vs/af-vs-ai)
- **aw** (https://plainspell.com/en/vs/af-vs-aw)
- **AR** (https://plainspell.com/en/vs/af-vs-ar)
- **AU** (https://plainspell.com/en/vs/af-vs-au)
- **ag** (https://plainspell.com/en/vs/af-vs-ag)
- **AK** (https://plainspell.com/en/vs/af-vs-ak)
- **AZ** (https://plainspell.com/en/vs/af-vs-az)
- **av** (https://plainspell.com/en/vs/af-vs-av)
- **ay** (https://plainspell.com/en/vs/af-vs-ay)
- **ao** (https://plainspell.com/en/vs/af-vs-ao)
- **ax** (https://plainspell.com/en/vs/af-vs-ax)
- **and** (https://plainspell.com/en/vs/af-vs-and)
- **are** (https://plainspell.com/en/vs/af-vs-are)

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