(of a man) to make love with a woman one cannot or will not marry; carry on flirtations.
Origin: 1675–85; < Greekphílandros one who loves (of a woman, loving her husband); see philo-, andro-; later used in fiction as a proper name for a lover, and apparently mistaken as “a man who loves”
1737, from Philander, popular name for a lover in stories, drama, and poetry, from Gk. adj. philandros "with love for people," perhaps mistaken as meaning "a loving man," from phil- "loving" + andr-, stem of aner "man." Philanderer "male flirt" is from 1841.