- an agent for the FBI.
Origin of G-man
First recorded in 1920–25; probably representing Government man
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for g-man
Christian Bale becomes Melvin Purvis, the first famous G-man who tracks the gangsters down.The Oscar Race Begins
June 30, 2009
- US slang an FBI agent
- Irish 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
Word Origin and History for g-man
"FBI agent," 1930, shortening of government man; used earlier in an Irish context (1917), but the abbreviation is perhaps the same one.
Online Etymology Dictionary, © 2010 Douglas Harper