taboo girl Share definition Flag The term "taboo girl" is used to describe a girl whose behavior, actions & lifestyle are often described as "taboo" by other people. Granma #1: Christina is such a taboo girl! Granma #2: Indeed Thelma, indeed. taboo girl by Drazzik April 11, 2011 0 0 Get merch Get the taboo girl mug. Buy Now — $32.95 See more merch