[jeɪ], (Interjection)

Definitions:
- expressing triumph, approval, or encouragement
(e.g: Yay! Great, Julie!)


Phrases:

Origin:
1960s: perhaps an alteration of yeah

[jeɪ], (Adverb)

Definitions:
- (with adjectives of measure) to this extent; so
(e.g: I knew him when he was yay big)


Phrases:

Origin:
1960s: probably a variant of yea