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
Now a full member, he’s unleashed a new layer of invention, reflecting Mastodon’s obsession with a certain kind of mid-’70s prog rock.
From Los Angeles Times ● Oct. 12, 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
It was no secret that since he was a boy, my dad had lusted after cars, and the pinnacle of his obsession would have been to own one.
From "The Book of Unknown Americans" by Cristina Henríquez
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It’s been a long journey of taking note of current events, including where the world is going, as well as people’s obsessions and fears.
From Los Angeles Times ● Sep. 28, 2026
There are those about unusual obsessions, like the Ford executive who kept score of colleagues’ verbal flubs, and odd jobs, like the hairy Utah men benefiting from a booming market for Jesus models.
From The Wall Street Journal ● Sep. 17, 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
Besides the number 7, I have two other major obsessions.
From "Counting by 7s" by Holly Goldberg Sloan
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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.