Rejectinator Share definition Flag Someone who reads 5 words in a paragraph defining a word on Urban Dictionary and decides to keep the word out. Jim: "Rejectinator".. "Someone who reads 5 words.." *Keep Out*Word: I'll be back. Rejectinator by steammustachio August 14, 2019 0 0 Get merch Get the Rejectinator mug. Buy Now — $32.95 See more merch