| motivator(noun, activity, drive, spur, stimulus) |
| parent(noun, desire, urge, spur, lure) |
| particle accelerator(noun, expression, idiom, substance, agent) |
| producer(noun, desire, urge, spur, leader) |
| propulsion(noun, power, agent, motive) |
| provocation(noun, charge, drive, cause, desire) |
| provoker(noun, desire, urge, spur, lure) |
| sire(noun, desire, urge, spur, lure) |
| source(noun, power, fuel, causes) |
| spontaneity(noun, feeling, drive, passion, desire) |
| sting(noun, charge, cause, boost, spur) |
| alterative(noun, desire, urge, spur, lure) |
| catalyzer(noun, desire, urge, spur, lure) |
| originator(noun, desire, urge, spur, lure) |
| activist(noun, activity, drive, stimulus, accelerator) |
| agency(noun, desire, urge, spur, lure) |
| agent provocateur(noun, desire, urge, spur, lure) |
| agitprop(noun, desire, urge, spur, lure) |
| allurement(noun, desire, reason, urge, spur) |
| alterant(noun, desire, urge, spur, lure) |