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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.

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The recent round of AI safety fears was kicked off by the July discovery that OpenAI agents had tried to cheat on an evaluation by hacking the AI software company Hugging Face.

From The Wall Street Journal ● Sep. 16, 2026

Weigh those cons against the things AI has reliably proven it can do – cheat on homework and write janky code – and it’s easy to understand Sanders’ urge to stand and yell “stop!”

From Salon ● Aug. 12, 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

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

Whether or not a child cheated on, say, the word completion test was not an iron-clad predictor of whether he or she would cheat on, say, the underlining ^4’s part of the speed test.

From "The Tipping Point" by Malcolm Gladwell

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