Back formation of "confidence man". One who gains the trust, or "confidence", of his victims (often called marks) in order to manipulate, steal from, or otherwise predate upon them. (U.S. slang, late 1800s)
Don't write him a check, he's a con man .
by pagurus November 18, 2007
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Great nickname for someone named Connor
Person 1: hey, my names Connor

Person 2: Nice, I’m gonna call you Con-Man
by Jdhzzyejazjajajja July 19, 2021
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