monogamous cheater Share definition Flag A married male or female who is having a fling or an affair with only one individual. Joe is a 'monogamous cheater'. He's been banging his best friend's wife for over a year now. monogamous cheater by BigBenW50 January 29, 2008 0 0 Get merch Get the monogamous cheater mug. Buy Now — $32.95 See more merch
