# Festivus

> English word · Proper noun · IPA /ˈfɛstɪvəs/ · frequency rank #81,322

## Definitions
1. A nondenominational holiday featured in a Seinfeld episode, now celebrated (seriously or otherwise) on December 23rd.

## Etymology
Coined by Daniel O'Keefe and popularized on the TV series Seinfeld; either borrowed from Latin fēstīvus or else derived from its English descendants festive and festival by adding the Latin suffix -us.

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