from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of, relating to, characteristic of, or causing an obsession: obsessive gambling.
  • adj. Excessive in degree or nature: an obsessive need to win.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Prone to cause obsession
  • adj. Having one thought or pursuing one activity to the absolute or nearly absolute exclusion of all others.
  • adj. Excessive, as results from obsession.
  • n. A person who is obsessed, who has an obsession

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. characterized by or constituting an obsession
  • n. a person who has obsessions


obsess +‎ -ive (Wiktionary)



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