phi-lan-der \fe-'lan-der\ vi -dered; -der-ing \-d(e-)ri{nj}\
[fr. obs. philander (lover, philanderer), prob. fr. the name Philander](1788)
1: to make love to someone with whom marriage is impossible (as because
of an existing marriage) or with no intention of proposing marriage
2: to have many love affairs -- phi-lan-der-er \-der-er\ n