wannanizer Share definition Flag A person who's sole purpose in life is to have multiple women in his life, but instead is too much of a douche to get any. "Man that guy has been getting denied all night, he's such a wannanizer" wannanizer by coosecoose14 November 8, 2009 0 0 Get merch Get the wannanizer mug. Buy Now — $32.95 See more merch