How do you spell the joyous interjection that starts with a “y” and rhymes with “day”?
The answer is “yay.” That’s the word from the editors at the Oxford English Dictionary and The American Heritage Dictionary of the English Language (4th ed.).
American Heritage says the interjection is “used as an exclamation of pleasure, approval, elation, or victory.” The OED describes it as a slang “exclamation of triumph, approval, or encouragement.”
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