two-timer(redirected from 2-timer)
One who has sexual relations with someone other than their romantic partner. After I found out that Jed had been sleeping with the woman next door, I packed up my bags and divorced that two-timer as quickly as I could. My last girlfriend turned out to be a two-timer, so I know how hurtful it can be.
n. one who deceives one’s lover. Sam just isn’t my idea of the typical two-timer.