| up-and-coming(adjective, energetic, daring, resourceful, innovative) |
| vivacious(adjective, strong, moving, energetic, lively) |
| weariless(adjective, tireless) |
| intense(adjective, keen, energetic, lively, vigorous) |
| apt(adjective, learning) |
| avid(adjective, energetic, enthusiastic, determined, earnest) |
| constant |
| efficient(adjective, work, strain, firmness, labour) |
| engaged(adjective, keen, intense, energetic, lively) |
| fraught |
| frisky(adjective, moving, keen, intense, energetic) |
| lusty(adjective, strong, moving, lively, active) |
| mettlesome(adjective, vigorous) |
| moving(adjective, active, stirring, inspiring) |
| occupied(adjective, active, fixed, absorbed, working) |
| passionate(adjective, strong, vigorous, ardent, sincere) |
| peppy(adjective, strong, moving, energetic, lively) |
| perky(adjective, moving, keen, informal, intense) |
| persisting |
| plugging(adjective, hardworking) |