# so long, and thanks for all the fish

> English word · Phrase

## Definitions
1. Goodbye, farewell.

## Etymology
From the title of a comic novel by Douglas Adams in 1984, in which it is the last message left by dolphins for humankind before escaping a doomed Earth.

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