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fixed idea

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 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for fixed idea
Contemporary Examples
Historical Examples
  • What could words do to her, for good or evil in the face of her fixed idea?

    The Secret Agent Joseph Conrad
  • But by this time it was a fixed idea with me, and I was very determined about it.

    My Double Life Sarah Bernhardt
  • Days went by, and between them that fixed idea grew in intensity.

    His Masterpiece Emile Zola
  • It had become his fixed idea—the bar that closed up his life.

    His Masterpiece Emile Zola
  • She, for her part, clung to her fixed idea, and before long she consulted Boutan.

    Fruitfulness Emile Zola
  • They had the fixed idea that they wanted to give one another up.

    Therese Raquin Emile Zola
  • It was perhaps a fixed idea with him that he would win you, and others misread it.

    The Long Roll Mary Johnston
  • They seldom seem to have a fixed idea of what they really want.

  • One of its principal signs was the fixed idea as to Midsummer Day.

    Robert Elsmere Mrs. Humphry Ward
British Dictionary definitions for fixed idea

fixed idea

an idea, esp one of an obsessional nature, that is persistently maintained and not subject to change Also 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
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fixed idea in Medicine

fixed idea n.
An often unreasonable idea or feeling that persists despite evidence to the contrary or efforts to ignore it; an obsession. Also called idée fixe.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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