| Term | Definition |
| assiduous | constant in application or effort; working diligently at a task; persevering; industrious; attentive |
| compelling | having a powerful and irresistible effect; requiring acute admiration, attention, or respect |
| diligent | constant in effort to accomplish something |
| dogged | persistent in effort; stubbornly tenacious |
| endure | to continue to exist |
| intrepid | resolutely fearless |
| maverick | a lone dissenter, as an intellectual, an artist, or a politician, who takes an independent stand apart from his or her associates |
| obdurate | unmoved by persuasion, pity, or tender feelings; stubborn |
| obstinate | firmly or stubbornly adhering to one's purpose, opinion, etc |
| proliferate | to increase in number or spread rapidly and often excessively |
| tenacity | persistent determination |
| vitality | exuberant physical strength or mental vigor |