1. a person who acts dishonestly in order to gain an advantage
2. a person who is unfaithful to their romantic partner
Usage: informal

Examples

• The teacher caught the cheater looking at another student’s test.
• He was known as a cheater who would do anything to win.
• The casino banned several cheaters from the premises.
• She discovered her husband was a cheater after finding suspicious messages.
• Nobody wanted to play cards with him because he was a notorious cheater.
• The cheater was disqualified from the competition.
• Students who are cheaters often struggle when they can’t rely on dishonest methods.