obsessional
1. [ adjective ] characterized by or constituting an obsession
Synonyms: obsessive
Examples:

"the obsessional character of his response" "obsessive gambling"

Related terms: neurotic
Similar spelling:   obsessionally
  obsession
  obsessively
  obsessive
  objection
  objectionably
  objectionable
  obsessivity
  obsessed
  obsequiously
  obsessiveness