# FSB

> English word · Proper noun · frequency rank #32,815

## Definitions
1. The Federal Security Service of the Russian Federation.

## Etymology
From Russian ФСБ (FSB), initialism of Федеральная Служба Безопасности (Federalʹnaja Služba Bezopasnosti, “Federal Security Service”).

## Easily confused with
- **fu** (https://plainspell.com/en/vs/fsb-vs-fu)
- **FW** (https://plainspell.com/en/vs/fsb-vs-fw)
- **fy** (https://plainspell.com/en/vs/fsb-vs-fy)
- **fun** (https://plainspell.com/en/vs/fsb-vs-fun)
- **fur** (https://plainspell.com/en/vs/fsb-vs-fur)
- **FYI** (https://plainspell.com/en/vs/fsb-vs-fyi)
- **FTC** (https://plainspell.com/en/vs/fsb-vs-ftc)
- **FTP** (https://plainspell.com/en/vs/fsb-vs-ftp)
- **FTA** (https://plainspell.com/en/vs/fsb-vs-fta)
- **FTW** (https://plainspell.com/en/vs/fsb-vs-ftw)
- **FTL** (https://plainspell.com/en/vs/fsb-vs-ftl)
- **FTE** (https://plainspell.com/en/vs/fsb-vs-fte)
- **fut** (https://plainspell.com/en/vs/fsb-vs-fut)
- **fuse** (https://plainspell.com/en/vs/fsb-vs-fuse)
- **fuss** (https://plainspell.com/en/vs/fsb-vs-fuss)
- **FTSE** (https://plainspell.com/en/vs/fsb-vs-ftse)
- **f** (https://plainspell.com/en/vs/f-vs-fsb)
- **fi** (https://plainspell.com/en/vs/fi-vs-fsb)
- **fa** (https://plainspell.com/en/vs/fa-vs-fsb)
- **FL** (https://plainspell.com/en/vs/fl-vs-fsb)

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