yay

1. 1
   interjectioncolloquial

   Used to show happiness or excitement, often as a cheerful shout.

   Like the happy cheer people make when their team scores a goal.

   Yay, we finally won the game!

   Yay, my package arrived today!

   Similarhooray, yippee, hurrah, woohoo

   Oppositeboo

   Note
2. 2
   adverbdated

   Alternative spelling of yea. Use it to show roughly how big or small something is.

   The puppy was only yay big when we first got it.

   See, in the 1800s, the island was yay big, but by the 1990s, it was yay big.

   2018, CGP Grey, 5:29 from the startHere, yay means yea, meaning this or so, as in this big.

   Note
3. 3
   nounslangUSuncountable

   A street name for cocaine, an illegal drug people take to get high.

   The dealer kept a stash of yay hidden inside the wall.

   Police found a bag of yay in the back of the car.

   Similarcoke, blow, snow

   Note

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