fbi
C1Formal, Journalistic, Governmental, Technical (Law Enforcement)
Definition
Meaning
The Federal Bureau of Investigation; the principal federal law enforcement agency and domestic intelligence service of the United States, operating under the jurisdiction of the U.S. Department of Justice.
The term is often used as a metonym for official, high-level, and sometimes secretive federal investigative authority. In non-U.S. contexts, it can refer generically to a powerful national investigative body. It can also denote the style, methods, or image associated with the agency (e.g., "FBI tactics," "FBI agent").
Linguistics
Semantic Notes
"FBI" functions primarily as a proper noun (the agency) but is frequently used attributively as a modifier (e.g., FBI agent, FBI investigation). It is typically used with the definite article "the." It carries connotations of authority, investigation, federal jurisdiction, and sometimes secrecy or intrusion.
Dialectal Variation
British vs American Usage
Differences
In American English, "FBI" is a highly specific, well-understood reference to the domestic federal agency. In British English, it is understood but refers to a foreign entity; the domestic equivalent would be MI5 (Security Service) or police units like the National Crime Agency (NCA).
Connotations
In the US: Authority, law enforcement, federal power, crime-solving. In the UK: Often associated with American media and politics; can carry Hollywood/gangster film connotations.
Frequency
Extremely high frequency in American English, especially in news and political discourse. Lower but still common in British English, primarily in contexts discussing US affairs or in international crime reporting.
Vocabulary
Collocations
Grammar
Valency Patterns
The FBI + [verb] (e.g., investigates, confirms, raids, arrests)[Subject] + is under FBI investigation[Subject] + was investigated by the FBIan FBI + [noun] (e.g., agent, memo, report)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “FBI-style investigation (an extremely thorough investigation)”
- “on the FBI's radar (under suspicion or surveillance by authorities)”
Usage
Context Usage
Business
Rare, except in contexts of compliance, fraud investigations, or regulatory scrutiny (e.g., 'The company is facing an FBI probe into its accounting practices').
Academic
Used in political science, criminology, history, and American studies to discuss law enforcement, federal power, or specific historical cases.
Everyday
Common in news consumption and conversations about crime, politics, or spy movies/TV shows.
Technical
Precise reference in legal, law enforcement, and intelligence community documents and discussions.
Examples
By Part of Speech
verb
British English
- The case was so serious it was eventually FBI-ed.
- The data was FBI-verified.
American English
- The evidence was FBI-tested.
- They FBI'd the suspect's background thoroughly.
adjective
British English
- He had an FBI-style briefing.
- It was an FBI-level security clearance.
American English
- She is a former FBI agent.
- We obtained an FBI report on the incident.
Examples
By CEFR Level
- The FBI is a police agency in America.
- I saw the FBI on television.
- The FBI investigates serious crimes in the United States.
- She wants to become an FBI agent one day.
- The FBI has launched a full-scale investigation into the cyberattack.
- According to an FBI report, the threat level has increased.
- The director of the FBI testified before Congress regarding the bureau's findings on domestic terrorism.
- The whistleblower's allegations prompted an exhaustive FBI probe that spanned three states.
Learning
Memory Aids
Mnemonic
**F**ederal **B**ureau of **I**nvestigation – Think of the three letters in order: Find Bad people and Investigate.
Conceptual Metaphor
THE FBI IS A WATCHFUL EYE/A NETWORK: Conceptualized as an all-seeing, omniscient entity that surveils and gathers information (e.g., 'The FBI has its eyes on them,' 'The FBI's web of informants').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating "FBI" as "ФБР" (FBR) in every context when speaking English; use the English letters 'F-B-I'.
- Do not confuse with the Russian "ФСБ" (FSB), which is a different security service with a different historical and political role.
- The concept is not directly equivalent to "милиция" or "полиция," which are general police forces.
Common Mistakes
- Omitting the definite article 'the' (incorrect: 'He works for FBI'; correct: 'He works for the FBI').
- Using it as a common noun (incorrect: 'an fbi'; correct: 'an FBI agent').
- Incorrect capitalization: should always be 'FBI', not 'fbi' or 'Fbi' in standard writing.
Practice
Quiz
What is the most accurate description of the FBI's primary role?
FAQ
Frequently Asked Questions
No. The FBI is primarily a domestic law enforcement and counterintelligence agency within the United States. The CIA (Central Intelligence Agency) is primarily an external foreign intelligence service, focused on gathering intelligence overseas.
Yes. FBI agents are federal law enforcement officers with full arrest powers and typically carry firearms.
Not by that name, but many countries have analogous domestic security and investigative agencies (e.g., the UK's MI5 and National Crime Agency, Canada's RCMP).
Because 'FBI' stands for 'the Federal Bureau of Investigation.' The word 'Bureau' in the name is typically preceded by the definite article. This convention carries over to the initialism.