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cheat on

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phrasal verb [transitive]
Word Forms
present tense
I/you/we/theycheat on
he/she/itcheats on
present participlecheating on
past tensecheated on
past participlecheated on
  1. 1
    cheat on someone to secretly have sex with someone other than your husband, wife, or partner. You can also say that someone is unfaithful to their husband, wife, or partner

    He discovered she'd been cheating on him.

  2. 2
    cheat on something mainly American to cheat by not obeying the rules on something

    They say she cheated on her taxes.

    Synonyms and related words for this sense of cheat on
See also main entry: cheat


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