noun
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psychiatry a persistent idea or impulse that continually forces its way into consciousness, often associated with anxiety and mental illness
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a persistent preoccupation, idea, or feeling
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the act of obsessing or the state of being obsessed
Other Word Forms
Derived Forms
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nonobsessionnoun
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self-obsessionnoun
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nonobsessionaladjective
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obsessionaladjective
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obsessionallyadverb
Inflected Forms
Nouns
Etymology
Origin of obsession
First recorded in 1505–15; from Latin obsessiōn-, stem of obsessiō “blockade, siege,” from obsess(us) “occupied, besieged” (past participle of obsidēre “to occupy, besiege”; see obsess) + -iō -ion
Explanation
If you have an obsession, you're totally fixated on something and unhealthily devoted to it. Some common obsessions include fantasy football leagues, celebrity gossip, and Elvis memorabilia. Obsession is kind of like a passion for something that crosses the line into crazy territory. Sometimes people get so preoccupied with their obsessions that it makes them anxious or emotionally unstable. If you have an obsession with the Yankees, for example, you might go to every single game, skip work to watch spring training, paper your room with Yankees posters, and write love notes to Derek Jeter.
Vocabulary lists containing obsession
Vocabulary from an excerpt from "Confessions of a 30-Year-Old Gamer," by Ta-Nehisi Paul Coates
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Derek Walcott (1930-2017) Tribute List
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The Boy Who Invented TV
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
That obsession to improve is undoubtedly his greatest strength.
From BBC ● Oct. 6, 2026
"When I met him, I could see a real author's style in him and I've always sensed in him an obsession with becoming a writer and a thirst for reading," he told AFP.
From Barron's ● Sep. 30, 2026
Ever the humanist, fascinated by ordinary people taking on otherwise herculean tasks to the point of obsession, Herzog resolved decades ago to make a film inspired by the sisters.
From Salon ● Sep. 28, 2026
Olympic gold medalist Remco Evenepoel’s unique build and obsession with optimizing equipment have turned him into a favorite at this week’s road cycling world championships.
From The Wall Street Journal ● Sep. 27, 2026
I don’t know if there’s a how-to-go-on-a-first-date-without-making-a-total-fool-of-yourself handbook out there, but if there is I’m pretty sure fessing up to your weird Dolly Parton obsession is not on the do list.
From "Dumplin'" by Julie Murphy
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Her own relationship to the subject provides a kind of narrative service road to Mr. Lowe’s four-lane highway of ultramarathoners and their obsessions.
From The Wall Street Journal ● Sep. 22, 2026
The rediscovery of Homer, alien obsessions, a novel of the Roman Republic’s fall and more.
From The Wall Street Journal ● Aug. 30, 2026
Rowbottom’s willingness to move toward culturally uncomfortable material is central to her work, he stressed, treating so-called lowbrow or feminine cultural obsessions not as guilty pleasures, but as material worthy of literary merit.
From Los Angeles Times ● Jun. 1, 2026
This isn’t all that uncommon: Trends crop up in filmmaking all the time, as potential narratives emerge from real-life events and cultural obsessions.
From Salon ● May 25, 2026
“The Sixers are really no different than a Gunter clan, albeit a well-funded one. We share all the same obsessions as gunters. And we have the same goal.”
From "Ready Player One: A Novel" by Ernest Cline
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.