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G-man

American  
[jee-man] / ˈdʒiˌmæn /

noun

plural

G-men
  1. an agent for the FBI.


G-man British  

noun

  1. slang an FBI agent

  2. a political detective

"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

Etymology

Origin of G-man

First recorded in 1920–25; probably representing Government man

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.

Robert Mueller, who ran the FBI from 2001 to 2013, was known to adhere to Hoover’s G-man dress code of white shirts and dark suits, admonishing agents who wore something more colorful.

From The Wall Street Journal

Sad to say, Ness peaked in his 20s, and Prohibition’s star G-man never recovered from the intoxicating effects of fame.

From Washington Post

“It’s something that stands still, stands strong, stands for a long time. And that’s exactly what G-man embodies.”

From Los Angeles Times

“I don’t think you’re a big master spy,” the G-man confides to Winner at one point.

From Washington Post

A G-man joins the district attorney’s office and busts a racketeer.

From Los Angeles Times