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English definition of “obsessive”

obsessive

adjective     /əbˈses.ɪv/ (also obsessional)
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     /-li/ adverb (also obsessionally)
(Definition of obsessive adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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