The Collaborative International Dictionary of English v.0.48:

Inducement \In*duce"ment\, n. [From Induce.]
   [1913 Webster]
   1. The act of inducing, or the state of being induced.
      [1913 Webster]

   2. That which induces; a motive or consideration that leads
      one to action or induces one to act; as, reward is an
      inducement to toil. "Mark the inducement." --Shak.
      [1913 Webster]

   3. (Law) Matter stated by way of explanatory preamble or
      introduction to the main allegations of a pleading; a
      leading to.
      [1913 Webster]

   Syn: Motive; reason; influence. See Motive.
        [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

108 Moby Thesaurus words for "inducement":
   Trinkgeld, agacerie, allure, allurement, appeal, attraction,
   attractiveness, bait, beguilement, beguiling, bewitchery,
   bewitchment, blandishment, bonus, bounty, bribe, cajolement,
   cajolery, captivation, carrot, charisma, charm, charmingness,
   coaxing, come-hither, come-on, conning, consideration, donative,
   double time, enchantment, encouragement, engagement, enlistment,
   enthrallment, enticement, entrapment, exhortation, fascination,
   fee, fillip, flirtation, forbidden fruit, glamour, gratuity, gravy,
   grease, honorarium, hortation, incentive, incentive pay,
   incitement, interest, inveiglement, invitation, jawboning,
   lagniappe, largess, liberality, lobbying, lure, magnetism,
   palm oil, payment, percentage, perks, perquisite, persuasion,
   persuasive, pourboire, preaching, preachment, premium, profit,
   provocation, reward, sales talk, salesmanship, salve, seducement,
   seduction, seductiveness, selling, sex appeal, snaring, snow job,
   soft soap, solicitation, something extra, sportula, spur,
   stimulation, stimulative, stimulus, suasion, sweet talk, sweetener,
   sweetening, tantalization, temptation, tip, wheedling, whet,
   winning ways, winsomeness, witchery, wooing, working on