Supercalifragilisticexpealadoshus Share definition Flag N, V, Adj: A retarded term used in stupid movies. "supercalifragilisticexpealadoshus" "that movie sucked" Supercalifragilisticexpealadoshus by fredrick doppleburg May 27, 2008 0 0 Get merch Get the Supercalifragilisticexpealadoshus mug. Buy Now — $32.95 See more merch