| engrossed(adjective, lively, active, fixed, absorbed) |
| exact(adjective, thorough, meticulous, painstaking) |
| exacting(adjective, thorough, meticulous, painstaking) |
| expeditious(adjective, regular, serious, practical, competent) |
| exuberant(adjective, vigorous) |
| faithful(careful, thorough, meticulous) |
| finicky(adjective, thorough, meticulous, painstaking) |
| fireball(adjective, keen, intense, energetic, enthusiastic) |
| fussbudget(adjective, thorough, meticulous, painstaking) |
| fussy(adjective, thorough, meticulous, painstaking) |
| grind(adjective, informal, hardworking) |
| hard ball(expression, energetic, enthusiastic, determined, earnest) |
| hearty(adjective, vigorous) |
| heedful(adjective, thorough, meticulous, painstaking) |
| hungry(adjective, energetic, enthusiastic, determined, earnest) |
| impassioned(adjective, strong, passionate, vigorous, ardent) |
| involved(adjective, energetic, lively, active, vigorous) |
| kinetic(adjective, strong, moving, energetic, lively) |
| meticulous(adjective, careful, thorough, controlled, orderly) |
| obstinate |