sugoi Share definition Flag Japanese equivalent of either "awesome" or "awful". Most frequently used to mean the former, at least among westerners. Chu chu rocketo, rocketo su-go-i. Tsubabababaaa! sugoi by super ultra hyper bishi bashi champ November 6, 2003 0 0 Get merch Get the sugoi mug. Buy Now — $32.95 See more merch