yay

interjection \ ˈyā \

Definition of yay

—used to express joy, approval, or excitement

See yay defined for English-language learners

Recent Examples of yay from the Web

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).

— devon abelman, Allure, "The Most Exciting Beauty Launches for Fall 2017," 18 Aug. 2017
Easy genetic modification could mean cures for cancer (yay!), kitty-sized pigs (squee!), and, yes, designer babies (ack).

— anna vlasits, WIRED, "Crispr Creator Jennifer Doudna on the Promises—and Pitfalls—of Easy Genetic Modification," 18 May 2017

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.