| interminability(noun, durability, perpetuity) |
| intrepidity(noun, power, strength, spirit, dash) |
| leniency(noun, understanding, empathy, pleasure, concern) |
| loyalty(noun, perseverance, reliability, faithfulness, steadiness) |
| lustiness(strength, energy, vivacity) |
| magnanimity(empathy, concern, caring, grace, compassion) |
| oomph(noun, go, energy, vigor, enthusiasm) |
| patientness(noun, acceptance, acknowledgment, avoidance, self-control) |
| perpetuation(period, extension, persistence, continuation, preservation) |
| physical fitness(noun, health, strength, robustness, wellness) |
| pluckiness(noun, spirit, dash, courage) |
| potency(noun, action, go, drive, power) |
| progress(noun, course, track, route, path) |
| progression(stability, steadiness) |
| prolongation(noun, increase, line, spread, course) |
| protraction(extension, stability, persistence, steadiness, continuance) |
| reliability(noun, faithfulness, dependability, loyalty, fidelity) |
| resoluteness(noun, support, control, strength, determination) |
| response(noun, feeling, vigor, liveliness, vitality) |
| rigidity(firmness, stiffness) |