[ cheer-ee-oh, cheer-ee-oh ]
/ ˈtʃɪər iˌoʊ, ˌtʃɪər iˈoʊ /
Chiefly British


goodbye; goodbye and good luck.
(used as a toast to one's drinking companions.)

noun, plural cheer·i·os.

a goodbye or farewell.
a toast of “cheerio!”

Origin of cheerio

1905–10; see cheero; source of -i- is unclear Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cheerio

British Dictionary definitions for cheerio

/ (ˌtʃɪərɪˈəʊ) /

sentence substitute informal, mainly British

a farewell greeting
a drinking toast


NZ a type of small sausage
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012