Whinebaby Share definition Flag A whinebaby is similar to a crybaby, but instead of crying, all they do is whine about things. Person 1: that one girl whines and complains way too much.Person 2: Yeah, she's such a whinebaby. Whinebaby by _IfOnly__ April 23, 2020 0 0 Get merch Get the Whinebaby mug. Buy Now — $32.95 See more merch