catalyst
I
noun
abettor, activator, active element, active partisan, active reformer, actuator, agacerie, agent provocateur, agitator, animator, catalytic agent, cause, encouragement, encourager, excitant, exciter, ferment, force, goad, impeller, impetus, impulse, incentive, incitation, incitement, inducement, inspiration, inspirer, instigator, maneuverer, modifying cause, motivating force, motivation, mover, moving spirit, planner, popular ringleader, power, prompter, provocateur, provocation, provocative, spur, stimulant, stimulator, strategist, suggester
II
index
stimulus
Burton's Legal Thesaurus.
William C. Burton.
2006