noun, plural coun·ter·spies.
a spy active in counterespionage.
Origin of counterspy
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for counterspy
Soon afterward, the agency had approached him to become a counterspy.Tom Swift and The Visitor from Planet X|Victor Appleton
noun plural -spies
a spy working against or investigating enemy espionage
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