Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “obsessive”

obsessive

adjective uk   /əbˈses.ɪv/ (also obsessional) us  
C2 thinking about something or someone, or doing something, too much or all the time: He's obsessive about punctuality.Mental and psychiatric disorders like, typical of, or caused by an obsession: obsessive secrecy obsessional behaviourContinually thinking about
obsessively
adverb uk   /-li/ (also obsessionally) us  

obsessive

noun [C] uk   /əbˈses.ɪv/ us  
an obsessive personMental and psychiatric disorders
(Definition of obsessive from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of obsessive?
Browse related topics

You are looking at an entry to do with Mental & psychiatric disorders, but you might be interested in these topics from the Psychology, psychiatry, & psychoanalysis topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “obsessive” in other dictionaries

Word of the Day

roost

When birds roost, they go somewhere to rest or sleep.

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More