Synonyms and related words :
activity, actuation, animation, aptitude, aptness, brightness, catalyst, cleverness, direction, docility, dynamics, educability, facility, going, impetus, impressionability, impulse, incentive, incitation, incitement, influence, inner-direction, instigation, intelligence, kinematics, kinesipathy, kinesis, kinesitherapy, kinetics, malleability, mobilization, moldability, motion, move, movement, moving, other-direction, plasticity, pliability, prompting, quickness, readiness, receptivity, restlessness, running, spur, stimulant, stimulation, stir, stirring, susceptibility, teachability, teachableness, trainableness, unrest, velocity, willingness