| effectiveness(noun, activity, drive, power) |
| efficacy(noun, activity, drive, power) |
| efficiency(noun, activity, drive, power) |
| endurance(noun, activity, drive, power) |
| enterprise(noun, activity, action, act) |
| enthusiasm(noun, trouble, drive, regard) |
| fire(noun, activity, drive, power) |
| fling(noun, energy, struggle, try) |
| force(noun, activity, action, act) |
| forcefulness(noun, activity, drive, power) |
| fortitude(noun, activity, drive, power) |
| get-up-and-go(noun, activity, drive, power) |
| hardihood(noun, activity, drive, power) |
| initiative(noun, activity, drive, power) |
| juice(noun, activity, drive, power) |
| life(noun, activity, action, movement) |
| liveliness(noun, activity, action, movement) |
| might(noun, activity, drive, power) |
| moxie(noun, activity, drive, power) |
| oomph(noun, energy, strain, vigor) |