strength

1 the ability to exert effort for the accomplishment of a task the murdered man's wife didn't have the emotional strength to face reporters Synonyms energy, firepower, force, horsepower, might, muscle, potence, potency, puissance, sinew, power, vigorRelated Words aptitude, capability, capacity, competence, competency; adequacy, effectiveness, effectualness, usefulnessNear Antonyms disability, inability, inaptitude, incapability, incapableness, incapacity, incompetence, incompetency; ineffectiveness, ineffectuality, ineffectualness, inefficaciousness, inefficacy, uselessness; helplessness, paralysisAntonyms impotence, impotency, powerlessness, weakness

2 the ability to withstand force or stress without being distorted, dislodged, or damaged this cheap shelving unit doesn't have the strength to hold all those books Synonyms firmness, soundness, stability, sturdinessRelated Words dependability, durability, reliability; solidity, solidness; cohesion, toughnessNear Antonyms insubstantiality, unsoundness, unsubstantiality; weaknessAntonyms insecurity, instability, precariousness, shakiness, unstableness, unsteadiness