1. (n.) The quality or state of being strong; ability to do or to bear; capacity for exertion or endurance, whether physical, intellectual, or moral; force; vigor; power; as, strength of body or of the arm; strength of mind, of memory, or of judgment.

2. (n.) Power to resist force; solidity or toughness; the quality of bodies by which they endure the application of force without breaking or yielding; -- in this sense opposed to frangibility; as, the strength of a bone, of a beam, of a wall, a rope, and the like.

3. (n.) Power of resisting attacks; impregnability.

4. (n.) That quality which tends to secure results; effective power in an institution or enactment; security; validity; legal or moral force; logical conclusiveness; as, the strength of social or legal obligations; the strength of law; the strength of public opinion; strength of evidence; strength of argument.

5. (n.) One who, or that which, is regarded as embodying or affording force, strength, or firmness; that on which confidence or reliance is based; support; security.

6. (n.) Force as measured; amount, numbers, or power of any body, as of an army, a navy, and the like; as, what is the strength of the enemy by land, or by sea?

7. (n.) Vigor or style; force of expression; nervous diction; -- said of literary work.

8. (n.) Intensity; -- said of light or color.

9. (n.) Intensity or degree of the distinguishing and essential element; spirit; virtue; excellence; -- said of liquors, solutions, etc.; as, the strength of wine or of acids.

10. (n.) A strong place; a stronghold.

11. (v. t.) To strengthen.

ability amount amperage ampleness amplitude aptitude arm armipotence asset authoritativeness authority backbone beef bite bitingness black power body boundlessness brawn brawniness brute force bulk burden charge charisma clout cogence cogency cohesiveness compulsion concentration concreteness core cuttingness demonic energy density determination dint drive durability duress dynamism effect effectiveness effectuality endurance energy enormity enormousness ergal expanse extent firmness fixity of purpose flower power force force majeure forcefulness formidableness fortitude full blast full force fullness gameness gaminess gift gigantism gist grandeur grandness great scope greatness grit guts gutsiness haleness hardiness hardness healthiness heartiness high flavor highness hugeness immensity impressiveness incisiveness infinity influence infrangibility intensity intestinal fortitude intrepidity iron will kinetic energy largeness lastingness leatherlikeness longevity lustiness magisterialness magnitude main force main strength mana mass materiality matter measure measurement meat might might and main mightiness moral courage moral fiber mordancy moxie muchness muscle muscle power nerve nervosity nervousness numbers palpability perseverance persistence pertinacity pith pizzazz plenitude pluck poignancy ponderability poop potence potency potential energy potentiality power power pack power structure power struggle powerfulness prepotency prodigiousness productiveness productivity puissance pull punch purport push quantity quantum rankness reliability resistance resoluteness resolution robustness ropiness ruggedness security sense sinew sinewiness solidity soundness spunk stability stableness stamina steadiness steam stiffness stoutness strength of mind strength of purpose strenuousness stringiness strong arm strong language strong point strongness stubbornness stupendousness sturdiness substance substantiality substantialness sum sum and substance superiority superpower talent tangibility tenaciousness tenacity toughness tremendousness trenchancy unbreakability unbreakableness validity vastness vehemence vigor vigorousness vim virility virtue virulence viscidity vitality wattage weight whole will will of iron will power