cheat on

phrasal verb

cheated on; cheating on; cheats on

informal

: to break a promise made to (someone, such as one's wife or husband) by having sex with someone else

He cheated on his wife/girlfriend.

Examples of cheat on in a Sentence

Recent Examples on the Web

As rumors swirled throughout the season that Michelle was—or had at some point been—cheating on Jesse, one name dropped in conversation was that of an A-list director who Michelle had apparently been fraternizing with at none other than Chateau Marmont. —Megan McCluskey, TIME, 5 June 2024

After learning in the first season that his (living but now deceased) wife cheated on him with his best friend, Pete’s attempts to get Alberta to see him as more than just a friend have fallen flat — at least for now. —Max Gao, Los Angeles Times, 4 June 2024

Yoon also admitted that his client cheated on his wife and frequently visited the Hong Kong Gentleman’s Club in Tijuana, a strip club known for offering prostitution. —Alex Riggins, San Diego Union-Tribune, 4 June 2024

In the past school year, there has been a significant increase in students’ cheating on writing assignments by using artificial intelligence. —Kwame Anthony Appiah, New York Times, 24 May 2024

Hansen attempted suicide after cheating on her husband and separating, according to court documents, but the couple would remarry for two years. —Christina Coulter, Fox News, 24 May 2024

Bumble apologizes for ad about celibacy More employees are cheating on workplace drug tests. —Megan Cerullo, CBS News, 17 May 2024

It was used by millions of married people who were looking to cheat on their partners. —Lexi Carson, Variety, 16 May 2024

According to figures from Quest Diagnostics cited by the Wall Street Journal, workers are cheating on drug screens at a rate not seen in over 30 years. —Christiaan Hetzner, Fortune, 15 May 2024