idée fixe[ ee-dey feeks ]SEE DEFINITION OF idée fixe
EXAMPLES FROM THE WEB FOR IDÉE FIXE
Darrell thus put into Lady Adela's head, he remained there, and became an idee fixe.
Happy lily, never to be saddled with an idee fixe, never to be in the grip of a monomania for happiness or love or fulfilment.
Germans are the 'idee fixe', and without an 'idee fixe', as you know, there's no such thing as religion.