cheat on
Intermediate (B1) informal
To secretly do something bad that breaks the rules or hurts someone who trusts you — like kissing another person when you have a boyfriend or girlfriend, or copying answers on a test.
"She found out he had been cheating on her for almost a year before she confronted him."
Hear it in context
did angela get a villain edit? | The Office US | Comedy Bites
Comedy Bites · 2:47
Erin to cheat on Andy.
Silicon Valley's Hottest Young Founder Right Now | Cluely, Roy Lee
EO · 8:51
Like what is cheat on everything?
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model providers to cheat on this
did angela get a villain edit? | The Office US | Comedy Bites
Comedy Bites · 2:49
Didn't you cheat on Andy?
Fang Fang’s Farting Boyfriend Is OUT
Brett Cooper · 22:10
please do not cheat on your wives.