# RSA

> English word · Noun · frequency rank #24,578

## Definitions
1. Initialism of Responsible Service of Alcohol (a qualification and permit for bar staff).
2. Initialism of runway safety area.
3. Initialism of recreational sea angler.
4. Initialism of road safety authority.

## Easily confused with
- **RT** (https://plainspell.com/en/vs/rsa-vs-rt)
- **RV** (https://plainspell.com/en/vs/rsa-vs-rv)
- **RW** (https://plainspell.com/en/vs/rsa-vs-rw)
- **run** (https://plainspell.com/en/vs/rsa-vs-run)
- **rub** (https://plainspell.com/en/vs/rsa-vs-rub)
- **rug** (https://plainspell.com/en/vs/rsa-vs-rug)
- **rum** (https://plainspell.com/en/vs/rsa-vs-rum)
- **rue** (https://plainspell.com/en/vs/rsa-vs-rue)
- **rye** (https://plainspell.com/en/vs/rsa-vs-rye)
- **RSS** (https://plainspell.com/en/vs/rsa-vs-rss)
- **rut** (https://plainspell.com/en/vs/rsa-vs-rut)
- **Rus** (https://plainspell.com/en/vs/rsa-vs-rus)
- **RTD** (https://plainspell.com/en/vs/rsa-vs-rtd)
- **RSI** (https://plainspell.com/en/vs/rsa-vs-rsi)
- **RSL** (https://plainspell.com/en/vs/rsa-vs-rsl)
- **RTC** (https://plainspell.com/en/vs/rsa-vs-rtc)
- **RTA** (https://plainspell.com/en/vs/rsa-vs-rta)
- **Rua** (https://plainspell.com/en/vs/rsa-vs-rua)
- **Ryan** (https://plainspell.com/en/vs/rsa-vs-ryan)
- **rush** (https://plainspell.com/en/vs/rsa-vs-rush)

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