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.

Last year, an FBI agent came across one of the group’s requests on Telegram, according to a court request filed by the FBI to seize the funds.

From The Wall Street Journal • Jul. 4, 2026

Brennan’s lawsuit names Trump as a defendant, as well as law-enforcement officials including acting Attorney General Todd Blanche and FBI Director Kash Patel.

From The Wall Street Journal • Jul. 1, 2026

The Federal Bureau of Investigation has also "seized over 500 of those drones, to process as evidence in FBI investigations," Doug Olson, the FBI's special agent responsible for coordination around the 2026 World Cup.

From Barron's • Jun. 29, 2026

The FBI investigation exploded into public view in February when agents carried out an early morning raid, with guns drawn, taking Carvalho and his wife into custody during the search.

From Los Angeles Times • Jun. 28, 2026

“Remember when the FBI guys were questioning Dad? I totally said they were spying on us. What if they followed us to Olive Garden?”

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