step out on someone

in. to betray one’s lover by going out with someone else. Hank has been stepping out on Bess, and she doesn’t know it yet.

Name	Pronounced	Usage
Callistus	kə-LIS-təs (English)	Late Roman
Dominic	['dɔminik]
Europa	-	Greek Mythology (Latinized)
Iosue	-	Biblical Latin
Malie	-	Hawaiian
Auchinleck	['ɔ:kin'lek]