Definitions

1. noun

a formal or polite way to say goodbye, especially in a farewell or a parting

“She said adiós to her friends as she boarded the plane.”

2. interjection

used to bid farewell or goodbye

“¡Adiós, amigos! ¡Hasta luego!”

3. verb

to bid farewell or goodbye, especially in a formal or polite way

“The hostess adióse to her guests at the party.”