Top Definition
Is a fairly common problem where people experience ‘obsessions’, recurring unwanted thoughts which are difficult to stop, and ‘compulsions’, rituals of checking behaviour or repetitive actions which are carried out in an attempt to relieve the thoughts.
Jocelyn has obsessive compulsive disorder, and checks the door 16 times to make sure it is locked.
by Barizzy January 26, 2006

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Also known as OCD, obsessive-compulsive disorder is a neurotic mental illness in which intrusive, negative thoughts and/or impulses which regularly enter the person's mind (obsessions) are counteracted by repetitive acts or rituals performed to alleviate the anxiety and general distress created by these obsessions. It is possible to qualify for a diagnosis of OCD if only obsessions or compulsions are present, although the vast majority have both.
Obsessive-compulsive disorder is much more than being quirky or a bit of a neat freak.
by Doc_B April 14, 2015

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To be so absolutely obsessed with a person that one talks about this person in everything that one does.
Man, Steven Keating has obsessive compulsive disorder, he is so in love with that girl that he talks about her in every conversation and shes even in his clan tag.
by OmgDanIsTheHottestManAlive March 28, 2010

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Disoder in which the sufferer has a 'need' to have everything perfected to the 't'. They are usually very anal and will induce bodily harm should you ruin their arrangements.
Ah, all my vinyls are arranged from A to Z...WHO THE FUCK PUT PINK FLOYD IN THE Z's?!!!"
by Sai Wolf May 29, 2005

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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