Rageposting Share definition Flag A term used to describe making a post to social media out of anger, usually to provoke people or start trouble. Often found on Twitter. "The influencer was cancelled due to their constant rageposting." Rageposting by Mattjod August 18, 2021 0 0 Get merch Get the Rageposting mug. Buy Now — $32.95 See more merch