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

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See Examples For:

FBI

The FBI continued to build a case against him, however.

From BBC ● Aug. 29, 2026

Plus: Global outages at Boston Scientific after hack; FBI takes down China-linked cyber operation.

From The Wall Street Journal ● Aug. 28, 2026

“I know a con man when I see one,” says Mr. Rogers, who was a special agent with the FBI from 1989 through 1994.

From The Wall Street Journal ● Aug. 28, 2026

“People were being surveilled by the FBI, and they’d pay family members or people they knew to survey them.”

From Los Angeles Times ● Aug. 27, 2026

While my older siblings continue whispering about banks and loans and finance things I don’t understand, I’m stuck on the idea of the FBI invading our house.

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