Yetinese Share definition Flag The language spoken by yetis, it sounds like grunting and screaming to humans. The large, white haired fellow came up to me and spoke Yetinese, I couldn't understand a word of it. Yetinese by Pastor Travis March 24, 2008 0 0 Get merch Get the Yetinese mug. Buy Now — $32.95 See more merch