Yay meaning

Used as an exclamation of pleasure, approval, elation, or victory.
interjection
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Yay is defined as an expression of approval, great happiness or excitement.

An example of yay is what you would shout upon winning the lottery.

interjection
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(colloquial) Alternative form of yea (yes).
interjection
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This; so.

Yay big, yay high.

adverb
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(US, slang) Cocaine.
noun
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interjection
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(colloquial) An expression of happiness.

Yay! I have finally finished my work!

interjection
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(chiefly US) So, this (accompanied by a hand gesture)

The pony was yay high.

adverb
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The name of the letter for the y sound in Pitman shorthand.
noun
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A branch of the Thai language.
noun
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So; by this amount.

“The fish was yay big” he said, spreading his arms three feet apart.

adverb
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adverb
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noun
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Origin of yay

  • Alteration of yea

    From American Heritage Dictionary of the English Language, 5th Edition

  • Probably from yea

    From American Heritage Dictionary of the English Language, 5th Edition

  • Alteration of yea (“yes; even, truly, verily"). More at yea.

    From Wiktionary

  • From Spanish llello.

    From Wiktionary