# three-letter agency

> English word · Noun

## Definitions
1. Any intelligence agency of the United States federal government.
2. Any intelligence agency, regardless of nationality or allegiance.

## Etymology
From the initialisms of major intelligence agencies in the United States, such as the CIA, FBI and NSA.

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