cheer·​io ˌchir-ē-ˈō How to pronounce cheerio (audio)
chiefly British
usually used as a farewell and sometimes as a greeting or toast

Word History


cheery + -o

First Known Use

1914, in the meaning defined above

Time Traveler
The first known use of cheerio was in 1914

Dictionary Entries Near cheerio

Cite this Entry

“Cheerio.” Dictionary, Merriam-Webster, Accessed 22 Jun. 2024.

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