| diligent(adjective, work, difficult, energetic, daring) |
| industrious(adjective, work, difficult, energetic, daring) |
| sedulous(adjective, work, difficult, busy, labour) |
| tireless |
| energetic(adjective, work, daring, busy, labour) |
| assiduous(adjective, work, labour, conscientious, multitask) |
| laborious(adjective, work, labour, multitask) |
| hard-working(adjective, work, labour, multitask) |
| active(adjective, difficult, energetic, lively, daring) |
| busy(adjective, work, energetic, daring, labour) |
| indefatigable |
| unflagging |
| untiring |
| persevering(adjective, conscientious) |
| zealous(adjective, energetic, lively, daring, busy) |
| enterprising(adjective, regular, serious, practical, competent) |
| ambitious(adjective, work, energetic, daring, labour) |
| businesslike(adjective, efficient, professional) |
| painstaking(adjective, difficult, regular, serious, practical) |
| plodding(adjective, work, labour, multitask) |