| tireless(adjective, strong, continue, energetic, lively) |
| indefatigable(adjective, strong, continue, lively, determined) |
| unflagging(adjective, strong, continue, firm, solid) |
| persistent(adjective, quiet, understanding, gentle, determined) |
| dogged(adjective, determined, persevering) |
| unfaltering(adjective, determined, steadfast, persevering) |
| unwavering(adjective, determined, consistent, unchanging, persevering) |
| assiduous(adjective, energetic, determined, vigorous, resolute) |
| resolute(adjective, determined, persevering) |
| industrious(adjective, strong, energetic, lively, determined) |
| persevering(adjective, quiet, understanding, gentle, energetic) |
| steadfast |
| tenacious(adjective, determined, persevering) |
| unswerving(adjective, determined, persevering) |
| unwearied(adjective, continue, determined, tired, perseverance) |
| determined(adjective, firm, solid, energetic, vigorous) |
| unfailing(adjective, continue, determined, tired, persevering) |
| diligent(adjective, energetic, determined, vigorous, resolute) |
| energetic(adjective, determined, active, vigorous, full) |
| sedulous |