philander, philanderer 1. To carry on a sexual affair, especially an extramarital affair, with a woman one cannot or does not intend to marry. 2. To engage in many love affairs, especially with a frivolous or casual attitude. 3. Philanderer actually means 'a lover of men' or of 'one's husband', but a mistake was made in the adoption from the Greek ... Found on http://www.wordinfo.info/words/index/info/view_unit/2726/23