The Collaborative International Dictionary of English v.0.48:

Incitement \In*cite"ment\, n. [Cf. F. incitement.]
   [1913 Webster]
   1. The act of inciting.
      [1913 Webster]

   2. That which incites the mind, or moves to action; motive;
      incentive; impulse. --Burke.
      [1913 Webster]

            From the long records of a distant age,
            Derive incitements to renew thy rage. --Pope.

   Syn: Motive; incentive; spur; stimulus; impulse;
        encouragement.
        [1913 Webster]

WordNet (r) 3.0 (2006):

incitement
    n 1: an act of urging on or spurring on or rousing to action or
         instigating; "the incitement of mutiny" [syn: incitation,
         incitement]
    2: needed encouragement; "the result was a provocation of
       vigorous investigation" [syn: provocation, incitement]
    3: something that incites or provokes; a means of arousing or
       stirring to action [syn: incitement, incitation,
       provocation]
    4: the act of exhorting; an earnest attempt at persuasion [syn:
       exhortation, incitement]

Moby Thesaurus II by Grady Ward, 1.0:

95 Moby Thesaurus words for "incitement":
   aggravation, agitating, agitation, animation, arousal, arousing,
   awakening, bait, bribe, carrot, clout, compulsion, drive,
   driving force, electrification, encouragement, enticement,
   exacerbation, exasperation, excitation, excitement, exciting,
   exhilaration, exhortation, exhorting, fillip, firing, fomentation,
   fomenting, galvanization, goading, impellent, impelling force,
   impetus, impulse, impulsion, incentive, incitation, inducement,
   inflaming, inflammation, influence, influencing, infuriation,
   inspiration, instigating, instigation, interest, invitation,
   irresistible force, irritation, lathering up, lure, moment,
   momentum, motivation, motive power, mover, needling, payment,
   pep rally, pep talk, percentage, persuasion, persuasive,
   perturbation, power, pricking, prodding, profit, prompting,
   propulsion, provocation, provoking, rabble-rousing, rallying,
   reward, spurring, steaming up, stimulation, stimulative, stimulus,
   stirring, stirring up, stirring-up, sweetener, sweetening,
   temptation, thrust, urging, wakening, whet, whipping, whipping up,
   working up