# idée fixe

> English word · Noun · IPA /iː.deɪ ˈfiːks/

## Definitions
1. An idea dominating the mind and maintained despite evidence to the contrary; (loosely), an obsession.
2. A recurring musical theme; a leitmotif.

## Etymology
Borrowed from French idée fixe (literally “fixed idea”).

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