The word's dramatic weight has made it a staple in Western pop culture: Sayonara - Definition, Meaning & Synonyms - Vocabulary.com

: It implies an acceptance of the inevitable parting. Historically, it was used more commonly as a transition, but today it has evolved into a formal farewell that carries significant emotional distance. 2. The Nuance of "Finality"

: Using it with friends or coworkers you see daily can feel cold or "too heavy," as if you are cutting ties or implying a permanent separation.

: When someone is moving overseas or leaving a job permanently.