Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Yay" Definition
interjection
Used as an exclamation of pleasure, approval, elation, or victory.
Source: American Heritage Dictionary
Expressing triumph, approval, or encouragement:.
Source: Oxford Dictionary
adverb
(with adjectives of measure) to this extent; so:.
Source: Oxford Dictionary