| Main Entry: | |
| Part of Speech: | noun |
| Definition: | physical ability, capacity |
| Synonyms: | applied force, arm*, brawn, dynamism, energy, force, forcefulness, horsepower, intensity, mechanical energy, might, muscle*, omnipotence, potency, potential, puissance, sinew, strength, vigor, vim, virtue, voltage, weight |
| Antonyms: | debility, disability, impairment, impotence, infirmity, weakness |
| Main Entry: | puberty |
| Part of Speech: | noun |
| Definition: | young adulthood |
| Synonyms: | adolescence, awkward stage, boyhood, girlhood, greenness, high-school years, juvenescence, juvenility, potency, preadolescence, pubescence, spring*, springtide, springtime, teenage years, teens, youth, youthfulness |
| Notes: | adolescence is the period of transition from childhood to adulthood; puberty is the time of sexual development |
| Antonyms: | adulthood |
| Main Entry: | steam |
| Part of Speech: | noun |
| Definition: | energy |
| Synonyms: | beef, force, might, muscle, potency, power, puissance, sinew, strength, vigor, vim |
| Main Entry: | strength |
| Part of Speech: | noun |
| Definition: | stamina, mental or physical |
| Synonyms: | backbone, body, brawn, brawniness, brute force, clout, courage, durability, energy, firmness, force, fortitude, hardiness, health, healthiness, lustiness, might, muscle, nerve, physique, pith, potency, pow, power, powerhouse, robustness, security, sinew, sock, soundness, stability, stableness, stalwartness, steadiness, steamroller, stoutness, strong arm, sturdiness, substance, tenacity, toughness, verdure, vigor, vim, vitality, zip |
| Antonyms: | lack, weakness |
| Main Entry: | strength |
| Part of Speech: | noun |
| Definition: | intensity |
| Synonyms: | clout, cogency, concentration, depth, effectiveness, efficacy, energy, extremity, fervor, force, juice*, kick*, potency, power, resolution, spirit, vehemence, vigor, virtue |
| Antonyms: | enervation, lethargy, weakness |
| Main Entry: | validity |
| Part of Speech: | noun |
| Definition: | genuineness, lawfulness |
| Synonyms: | authority, cogency, effectiveness, efficacy, force, foundation, gravity, grounds, legality, legitimacy, persuasiveness, point, potency, power, punch, right, soundness, strength, substance, validness, weight |
| Antonyms: | invalidity |
| Main Entry: | vigor |
| Part of Speech: | noun |
| Definition: | power, energy |
| Synonyms: | ability, action, activity, agility, alertness, bang*, birr, bounce, capability, capacity, dash, drive, dynamism, endurance, enterprise, exercise, fire, force, get-up-and-go, go*, hardiness, healthiness, intensity, juice*, kick*, liveliness, lustiness, might, motion, moxie*, muscle*, nimbleness, pep, pith, potency, puissance, punch*, push, quickness, snap*, sock, soundness, starch, steam, strength, tuck, urgency, vehemence, vim, vitality, well-being, zing, zip |
| Antonyms: | enervation, idleness, inactivity, lethargy, weakness |
| Main Entry: | virility |
| Part of Speech: | noun |
| Definition: | masculinity |
| Synonyms: | forceful, machismo, macho*, maleness, manhood, manliness, muscularity, potency, power, ruggedness, strength, vigor |
| Main Entry: | puissance |
| Part of Speech: | noun |
| Definition: | energy |
| Synonyms: | clout, force, influence, might, muscle, potency, power, strength, sway, vigor |