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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

Though her professors warned against using it to cheat on assignments, she wasn’t tempted.

From The Wall Street Journal • May 26, 2026

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

From Salon • Feb. 20, 2026

This past spring, OpenAI offered students two months of free access to ChatGPT, evidently hoping to lure them into buying paid subscriptions that will help them cheat on their homework, papers and tests.

From MarketWatch • Oct. 24, 2025

“None of us knew Jon was going to cheat on me. I mean, we had a good two-year relationship.”

From "Piecing Me Together" by Renée Watson

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