| Main Entry: | |
| Part of Speech: | noun |
| Definition: | strength, vigor |
| Synonyms: | backbone*, endurance, energy, force, fortitude, grit, guts*, gutsiness, heart, indefatigability, intestinal fortitude, legs, lustiness, moxie*, power, power of endurance, resilience, resistance, starch, staying power, tolerance, toleration, vim, vitality, zip |
| Antonyms: | apathy, lack, laziness, lethargy, weakness |