Jamootin Share definition Flag A word that describes someone who is a constant liar, almost a pathological liar. "This jamootin ass nigga over here" "Ohhh shit, that nigga dealin wit a jamooter" Jamootin by Ashleydizzle January 19, 2008 0 0 Get merch Get the Jamootin mug. Buy Now — $32.95 See more merch