one-womanizer Share definition Flag A man who constantly pursues a flirts with one (and only one) woman. Like a monogamous Don Juan. Did you see that guy staring at his wife and ignoring the cheerleaders? What a one-womanizer! one-womanizer by Rewsky September 22, 2016 0 0 Get merch Get the one-womanizer mug. Buy Now — $32.95 See more merch