Definition of yay
—used to express joy, approval, or excitement
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Recent Examples of yay from the Web
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Victoria Beckham is teaming up with Estée Lauder on a second collection (yay!), and the popular Eye Foils are making a return with two brand-new shades: Blonde Gold (above) and Burnt Anise (a charcoal).
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Easy genetic modification could mean cures for cancer (yay!), kitty-sized pigs (squee!), and, yes, designer babies (ack).
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'yay.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of yay
1963
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