| eagerness(noun, feeling, pleasure, passion, energy) |
| ebullience(noun, energy, excitement, condition, vigor) |
| elan(feeling, power, passion, strength, energy) |
| entertainment(noun, interest, occupation, pursuit) |
| exercising(noun, action, study, act, work) |
| exploit(noun, scheme, undertaking, venture, deed) |
| feat(noun, scheme, undertaking, venture, deed) |
| field(noun, area, work, interest, discipline) |
| fluster(noun, excitement, condition, stress, zeal) |
| flux(noun, move, action, act, change) |
| friskiness(noun, vigor, sharpness, cleverness, quickness) |
| functioning(noun, performance, movement, force, plan) |
| gesture(noun, move, action, act, change) |
| get-up-and-go(noun, drive, power, strength, energy) |
| glow(noun, feeling, passion, energy, excitement) |
| goings-on(noun, business, action, movement, matter) |
| impetuosity(noun, feeling, passion, energy, excitement) |
| issue |
| joie de vivre(expression, idiom, energy, vigor, sparkle) |
| labour |