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Federal Bureau of Investigation

British  

noun

  1. See FBI

"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

Federal Bureau of Investigation Cultural  
  1. An agency of the United States federal government, long headed by J. Edgar Hoover, which investigates violations of federal (rather than state or local) laws, including kidnaping, smuggling narcotics, and espionage.


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Established in 1908 under the Department of Justice, the FBI earned its reputation in the 1920s and 1930s by apprehending notorious bank robbers and gangsters.

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.

After closely analyzing the deals and other information, Federal Bureau of Investigation agents traced the well-timed tips back to a single lawyer: Nicolo Nourafchan, who worked at the Boston-based firm, Goodwin Procter.

From The Wall Street Journal • May 12, 2026

Last week, Federal Bureau of Investigation Director Kash Patel sued the Atlantic for defamation after it published an article highlighting concerns about his drinking habits and professional conduct.

From The Wall Street Journal • Apr. 27, 2026

Cambodia also has expanded cooperation with international partners and has engaged with senior U.S. counterparts, including the Federal Bureau of Investigation.

From The Wall Street Journal • Apr. 24, 2026

Both the Federal Bureau of Investigation and the Bureau of Alcohol, Tobacco, Firearms and Explosives are involved in the investigation into Sunday’s shootings, Smith said.

From The Wall Street Journal • Apr. 20, 2026

Agents were now empowered to make arrests and carry firearms, and the department was soon renamed the Federal Bureau of Investigation.

From "Killers of the Flower Moon" by David Grann

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