| motive force(noun, expression, force, power, reason) |
| propulsion(noun, force, power, energy, thrust) |
| impetus(noun, force, drive, reason, inspiration) |
| motive power(noun, expression, idiom, force, power) |
| incentive(noun, force, drive, power, reason) |
| electromotive force(noun, expression, force, power, energy) |
| mainspring(noun, force, reason, motive, impetus) |
| instigator(noun, person, force, power, energy) |
| locomotion(noun, force, power, energy, physics) |
| motivity(noun, force, power, energy, physics) |
| moving power(noun, expression, force, power, energy) |
| agenda(noun, force, power, reason, motivation) |
| impelling cause(noun, expression, force, reason, motive) |
| initiator(noun, person, force, power, energy) |
| kinetic energy(noun, expression, force, power, energy) |
| means of propulsion(noun, expression, idiom, force, power) |
| motivating force(noun, expression, force, reason, motive) |
| prime mover(noun, expression, force, power, energy) |
| agent(noun, person, force, power, cause) |
| animator(noun, person, force, power, energy) |