# so long

> English word · Interjection

## Definitions
1. Goodbye; a valediction used when leaving or departing from a person or place.

## Etymology
Uncertain. Compare to Swedish hej så länge and Russian пока (poka). See Douglas Harper (2001–2026), “so long”, in Online Etymology Dictionary.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/so-long