fbi

word

Definition

The FBI (Federal Bureau of Investigation) is the main national police agency in the United States responsible for investigating crimes like terrorism, espionage, and organized crime.

Usage & Nuances

'FBI' is always written in capital letters. It refers specifically to the U.S. agency, often mentioned in news, movies, and TV shows. Used as both a noun ('the FBI') and an adjective ('an FBI agent'). Do not use 'FBI' for police agencies from other countries.

Example Sentences

Have you ever seen a real FBI agent?

natural

The FBI showed up at his office this morning.

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The FBI is investigating the case.

basic

She works for the FBI.

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The FBI caught the criminals.

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Don't joke about the FBI tapping your phone!

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