cheerio

/ˈtʃɪriˌoʊ/
interjection
  1. Used to say goodbye.
    • Cheerio for now—I'll call you tomorrow.
    • Cheerio! See you at the party tonight.
    • He waved and said, 'Cheerio, everyone!'
Antonyms
What does "cheerio" mean? | whatsthatwordmean | whatsthatwordmean