Regismic Share definition Flag It is a combination of "really" and "orgasmic." It is along the same lines as spectacular, stellar, awesome, and fantastic. But it trumps all of those. It is the ultimate adjective. Those cookies were regismic.You were just regismicly brosted.Rachel is a regismic student. Regismic by reswein September 10, 2011 0 0 Get merch Get the Regismic mug. Buy Now — $32.95 See more merch