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cheat on

Idioms  
  1. Be sexually unfaithful to, as in They broke up right after she found he was cheating on her. [Colloquial; 1920s]


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Manchester City footballer Ruben Dias has confirmed his break-up with Love Island presenter Maya Jama, but insisted he did not cheat on her during their relationship.

From BBC • May 30, 2026

Solution manuals have long been online, and any number of web sites have enabled students to cheat on assigned homework.

From The Wall Street Journal • May 25, 2026

Clear-eyed hindsight shows that Sullivan didn’t deliberately cheat on her boyfriend, though.

From Salon • Feb. 20, 2026

“I don’t know what he was using them for, but he has been known for trying to cheat on schoolwork and stuff,” she said.

From Slate • Feb. 12, 2026

I showed up every day this semester, sat my butt in every class, did some homework, and didn’t cheat on tests.

From "Speak" by Laurie Halse Anderson

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