yeay Share definition Flag A half-way word between "Yea" and "Yay!".. Pronounced: YE-AY! (whilst nodding) "Is it true that the school burnt down?" "Yeay!" "Shibby!" yeay by relelahlw July 29, 2005 0 0 Get merch Get the yeay mug. Buy Now — $32.95 See more merch