the quality or state of being strong; bodily or muscular power; vigor.

mental power, force, or vigor.

moral power, firmness, or courage.

power by reason of influence, authority, resources, numbers, etc.

number, as of personnel or ships in a force or body

a regiment with a strength of 3000.

effective force, potency, or cogency, as of inducements or arguments

the strength of his plea.

power of resisting force, strain, wear, etc.

vigor of action, language, feeling, etc.

the effective or essential properties characteristic of a beverage, chemical, or the like

The alcoholic strength of brandy far exceeds that of wine.

a particular proportion or concentration of these properties; intensity, as of light, color, sound, flavor, or odor

coffee of normal strength.

something or someone that gives one strength or is a source of power or encouragement; sustenance

The Bible was her strength and joy.

power to rise or remain firm in prices

Stocks continued to show strength. The pound declined in strength.

on the strength of

on the basis of; relying on

He was accepted by the college on the strength of ardent personal recommendations.

noun

lack , weakness , enervation , lethargy , disadvantage , debility , delicacy , fragility , frailty , impotency , infirmity

noun

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 * , cogency , concentration , depth , effectiveness , efficacy , extremity , fervor , juice * , kick * , resolution , spirit , vehemence , virtue , anchor , asset , burden , connection , core , gist , guts , in , intestinal fortitude , license , mainstay , meat , purport , sense , strong point , succor , upper hand , weight , wire , potence , powerfulness , puissance , thew , coercion , compulsion , constraint , duress , pressure , violence , integrity , solidity , wholeness , fastness , hardness , sureness , animation , sprightliness , steam , advantage , beef , capacity , chastenment , conclusiveness , endurance , forte , hardihood , impetuosity , impregnability , influence , intensity , invincibility , kick , lustihood , muscularity , permanency , reinforcement , spunk , stamina , stay , sthenia , strenuosity , support , thews , validity , valor , virility , vividness , will