stuptarded Share definition Flag Stuptarded is an adjective. It is a compound of stupid and retarded. Something really idiotic. Friend-"Hahahaha i just walked in to a pole"Other friend-" woooowww... that was hella stuptarded" stuptarded by EmKat<>< August 31, 2011 0 0 Get merch Get the stuptarded mug. Buy Now — $32.95 See more merch