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.

Carvalho has been on paid administrative leave since a February FBI raid of his home and office.

From Los Angeles Times • May 19, 2026

In return, four years later the FBI supported Marcinko's application to stay in the US after her visa ran out in 2022.

From BBC • May 19, 2026

“I can tell you unequivocally, this FBI is targeting and investigating no journalists,” he said.

From Salon • May 16, 2026

The FBI director was also on the Hill this week for a budget hearing and, in an unorthodox strategy for a setting where you’re asking Congress for money, was eager to fight.

From Slate • May 16, 2026

“No way. I guarantee the FBI is watching our whole block.”

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