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FBI

American

[ef-bee-ahy] / ˈɛfˈbiˈaɪ /

noun

U.S. Government.

Federal Bureau of Investigation: the federal agency charged with investigations for the Attorney General and with safeguarding national security.

FBI British

abbreviation

Federal Bureau of Investigation; an agency of the Justice Department responsible for investigating violations of Federal laws

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

FBI Director Kash Patel filed a $250 million defamation lawsuit against The Atlantic on Monday, claiming the magazine’s recent exposé on his time as agency director was a malicious “hit piece.”

From Salon • Apr. 20, 2026

The FBI did not immediately respond to the BBC's request for comment.

From BBC • Apr. 20, 2026

FBI Director Kash Patel filed a $250 million defamation lawsuit against the Atlantic and one of its writers, alleging a recent article was malicious and inaccurate.

From The Wall Street Journal • Apr. 20, 2026

Martina’s brother told Ahmad that she’d been interrogated by the FBI, that their address had been broadcast on the news, and that Martina had taken their girls to a safe place.

From Slate • Apr. 19, 2026

She can’t explain to the FBI that she’s innocent.

From "South of Somewhere" by Kalena Miller

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023