yay (2)EnglishOxford Dictionary of Englishyay2 /jeɪ / (also yea) ▸ adverb informal (with adjectives of measure) to this extent; so: I knew him when he was yay big. ▪ to a considerable degree; much: yay later. – ORIGIN 1960s: probably a variant of yea1.
EnglishOxford Dictionary of EnglishEnglishOxford Dictionary of English
