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:
Only the Cook Islands can lay similar claims to an all-out obsession with the game in terms of national importance.
From BBC ● Oct. 15, 2026
It’s about his obsession with “Minecraft,” the immensely popular video sandbox game that takes place in a world of 3D cubes representing raw materials such as wood, ores, stone and dirt.
From Los Angeles Times ● Oct. 1, 2026
And yet, Sephora and other cosmetic retailers love that their obsession with anti-aging begins in their teens and 20s.
From Salon ● Oct. 1, 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
He was genuinely interested in computers, not for their own sake but for their service to a lifelong obsession: the inner workings of the stock market.
From "The Big Short" by Michael Lewis
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One of my climate obsessions, post-California, is clean indoor air, which rules out burning wood inside the house.
From The Wall Street Journal ● Oct. 8, 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
His best work tunneled into life’s darkest spaces to excavate ideas about our fears and obsessions, often reflected through dazzling practical effects that matched the naturalism of his greatest feature: a singularly expressive, malleable face.
From Salon ● Jul. 17, 2026
I am growing to love Jane Schoenbrun’s exfoliation of ’80s horror obsessions, especially for the movie’s nonjudgmental embrace: Let these movies be free in all their “problematic” badness and let them work on you.
From Los Angeles Times ● May 22, 2026
"I believe you've had an opportunity to witness just how wild Sophia can be. I saw her handiwork with one of the Pompadour twins. And I take it she's shown you her portraits? Her obsessions."
From "The Belles" by Dhonielle Clayton
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Get a wordDefinitions 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.