| get-up-and-go(noun, drive, push, energy, determination) |
| goods(noun, drive, push, energy, determination) |
| gumption(noun, drive, power, strength, push) |
| guts(noun, drive, power, strength, push) |
| headway(movement, speed, process, growth, rate) |
| horsepower(noun, trouble, force, power, strength) |
| impact(noun, trouble, power, strength, energy) |
| impelling force |
| incitation(thrust, impulsion) |
| jerk(noun, impulse) |
| knock(noun, impulse) |
| might(noun, trouble, drive, power, strength) |
| moment coefficient(expression, idiom) |
| sinew(noun, trouble, power, strength, energy) |
| sock(noun, trouble, power, strength, energy) |
| spunk(noun, drive, push, energy, determination) |
| spur(push, thrust, propulsion, impulsion) |
| steam(noun, force, drive, power, strength) |
| stimulant(thrust, impulsion) |
| strain(noun, trouble, power, strength, energy) |