cheat on
The phrase "cheat on" is commonly used in both romantic contexts and situations involving dishonesty for personal gain.
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Definition
B2Romantic Relationships
(colloquial, idiomatic)To be unfaithful to a romantic partner by having a secret relationship with someone else.
Example
- She discovered that he had been cheating on her for months.
B2General Dishonesty
(colloquial, idiomatic)To act dishonestly in order to gain an advantage, such as in a game or exam.
Example
- He was caught cheating on his final exam and was disqualified.
Similar
Terms that have similar or relatively close meanings to "cheat on":