1a: deceit, trickeryspecifically: intentional perversion of truth in order to induce another to part with something of value or to surrender a legal right was accused of credit card fraud
b: an act of deceiving or misrepresenting : trickautomobile insurance frauds
2a: a person who is not what he or she pretends to be : impostorHe claimed to be a licensed psychologist, but he turned out to be a fraud.also: one who defrauds : cheat
b: one that is not what it seems or is represented to be
The UFO picture was proved to be a fraud.