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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.

The FBI, National Security Council, state department, Delta Force and the Iraqi Counter-Terrorism Service were in contact about her abduction, sources familiar told CBS.

From BBC • Mar. 31, 2026

Her brother Bladimir Flores was named the parliament’s head of security before becoming the inspector general of the Venezuelan FBI.

From The Wall Street Journal • Mar. 29, 2026

The FBI had no immediate comment on Friday, but a person familiar with the matter confirmed that a personal email account of Patel’s had been breached.

From Los Angeles Times • Mar. 29, 2026

“Kash Patel, the current head of the FBI, who once saw his name displayed with pride on the agency’s headquarters, will now find his name among the list of successfully hacked victims,” Handala posted.

From Salon • Mar. 27, 2026

How did she get that money if the FBI froze our credit cards?

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