a persistent or obsessing idea, often delusional, that can, in extreme form, be a symptom of psychosis.
Origin of fixed idea
First recorded in 1820–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for fixed ideacraziness, fascination, lunacy, rage, passion, frenzy, craze, enthusiasm, dementia, obsession, craving, fad, infatuation, desire, bee, partiality, aberration, hang-up, furor, fancy
an idea, esp one of an obsessional nature, that is persistently maintained and not subject to changeAlso: idée fixe
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
An often unreasonable idea or feeling that persists despite evidence to the contrary or efforts to ignore it; an obsession.idée fixe
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.