Sentence examples for a con from inspiring English sources

The phrase "a con" is grammatically correct and commonly used in written English.
It is a short form of "a con artist," which refers to a person who deceives or swindles others through deceptive practices. Example: The city was full of street performers, but Mary was able to see through the act of the man claiming to be a magician. She warned her friends, "Don't give him any money, he's just a con."