compulsive

compulsive
    adj 1: caused by or suggestive of psychological compulsion;
           "compulsive drinking"
    2: strongly motivated to succeed [syn: {compulsive},
       {determined}, {driven}]
    n 1: a person with a compulsive disposition; someone who feels
         compelled to do certain things
    

Compulsive \Com*pul"sive\, a.
   Having power to compel; exercising or applying compulsion.
   [1913 Webster]

         Religion is . . . inconsistent with all compulsive
         motives.                                 --Sharp.
   [1913 Webster]
    

63 Moby Thesaurus words for "compulsive":
      accordant, anal, automatic, blind, bourgeois, coactive, coercive,
      compelling, compulsatory, compulsory, concordant, conditioned,
      conformist, constrained, constraining, conventional, corresponding,
      driving, forced, forceful, formalistic, gripping, harmonious,
      holding, impelling, imperative, imperious, impulsive, in accord,
      in keeping, in line, in step, instinctive, involuntary,
      irresistible, kosher, mechanical, obsessing, obsessional,
      obsessive, orthodox, overwhelming, pedantic, plastic, possessing,
      precisianistic, preoccupying, pressing, reflex, reflexive,
      restraining, square, straight, stuffy, traditionalist, unconscious,
      unintentional, unthinking, unwilled, unwilling, unwitting, uptight,
      urgent