| motivator(noun, spur, incentive, provocation, inducement) |
| movement(noun, feeling, pleasure, passion, rage) |
| object(noun, reason, element, matter, source) |
| origin(noun, start, reason, matter, opening) |
| pep rally |
| pep talk |
| piquing(noun, charge, cause, boost, spur) |
| predetermination(drive, desire, reason, interest, inspiration) |
| pressure |
| prime mover(noun, expression, reason, element, matter) |
| producer(noun, reason, element, matter, source) |
| propellant(noun, charge, cause, boost, spur) |
| purpose(noun, reason, element, matter, spur) |
| rage(noun, feeling, pleasure, passion, stir) |
| shot in the arm(noun, expression, idiom, charge, cause) |
| source(noun, start, reason, matter, opening) |
| spring(noun, start, reason, element, matter) |
| starting point(expression, start, beginning, origination) |
| stimulant(noun, charge, cause, start, reason) |
| sting(noun, charge, cause, boost, spur) |