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
Iacopo	-	Italian
Belial	-	Biblical, Biblical Latin, Judeo-Christian Legend
Coffey	['kɔfi]
Rollo	RAHL-o	English
Eerik	E:-reek	Finnish
Ai (2)	-	Chinese