giannaphobic Share definition Flag When somebody is rude/scared of/ or against someone named Gianna for no reason or because of who they are Bro that bitch was so mean to Gianna she’s literally giannaphobic. giannaphobic by Baby-g$$ September 29, 2020 0 0 Get merch Get the giannaphobic mug. Buy Now — $32.95 See more merch