step out on someone en · X
Meanings
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(euphemistic) To cheat on someone; to be unfaithful to a lover.
Nikki, who is stepping out on her main squeeze Lee,
1988 February 7, Elizabeth Pincus, “A Romp Through Lavender Land”, in Gay Community News, volume 15, number 29, page 7:I could tell from the way she acted that night that she had never stepped out on her man.
2020, Danesha Little, Getting Even:
Translations (3)
de jemanden betrügen (to cheat on someone; to be unfaithful to a lover) · tr aldatmak (to cheat on someone; to be unfaithful to a lover) · fr tromper (to cheat on someone; to be unfaithful to a lover)