CHEERIO Meaning of CHEERIO in English cheerio, C~ BrE AmE ˌtʃɪər i ˈəʊ ◂ AmE ˌtʃɪr i ˈoʊ ˈ••• ▷ cheerio|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012