What does "cheat on" mean?

Used other than figuratively or idiomatically: see cheat, on.

What is a synonym for "cheat on"?

Common synonyms include: bamboozle, beguile, betray, bluff, cajole, cheat.

verb, slang

verb, slang ·Moderate ·College level

Verb

1
Used other than figuratively or idiomatically: see cheat, on.
"I was disqualified for cheating on my final exam."
2
be sexually unfaithful to one's partner in marriage wordnet
3
To be unfaithful to, especially in a romantic relationship. colloquial, idiomatic, transitive
"Six years of a happy relationship, and then she had the nerve to cheat on me with a barman!"

"I was disqualified for cheating on my final exam."