#159. [Degree of power.] Strength.—­ N. strength; power &c. 157;
energy &c. 171; vigor, force; main force, physical force, brute force; spring, elasticity, tone, tension, tonicity.
     stoutness &c. adj.; lustihood[obs3], stamina, nerve, muscle, sinew,
thews and sinews, physique; pith, pithiness; virtility, vitality.
     athletics, athleticism[obs3]; gymnastics, feats of strength.
     adamant, steel, iron, oak, heart of oak; iron grip; grit, bone.
     athlete, gymnast, acrobat; superman, Atlas, Hercules, Antaeus[obs3],
Samson, Cyclops, Goliath; tower of strength; giant refreshed.
     strengthening &c. v.; invigoration, refreshment, refocillation[obs3].
     [Science of forces] dynamics, statics. 
     V. be strong &c. adj., be stronger; overmatch.
     render strong &c. adj.; give strength &c. n.; strengthen, invigorate,
brace, nerve, fortify, sustain, harden, case harden, steel, gird; screw up, wind up, set up; gird up one’s loins, brace up one’s loins; recruit, set on one’s legs; vivify; refresh &c. 689; refect[obs3]; reinforce, reenforce &c. (restore) 660. 
     Adj. strong, mighty, vigorous, forcible, hard, adamantine, stout,
robust, sturdy, hardy, powerful, potent, puissant, valid.
     resistless, irresistible, invincible, proof against, impregnable,
unconquerable, indomitable, dominating, inextinguishable, unquenchable; incontestable; more than a match for; overpowering, overwhelming; all powerful, all sufficient; sovereign.
     able-bodied; athletic; Herculean, Cyclopean, Atlantean[obs3];
muscular, brawny, wiry, well-knit, broad-shouldered, sinewy, strapping, stalwart, gigantic.
     manly, man-like, manful; masculine, male, virile.
     unweakened[obs3], unallayed, unwithered[obs3], unshaken, unworn,
unexhausted[obs3]; in full force, in full swing; in the plenitude of power.
     stubborn, thick-ribbed, made of iron, deep-rooted; strong as a lion,
strong as a horse, strong as an ox, strong as brandy; sound as a roach; in fine feather, in high feather; built like a brick shithouse; like a giant refreshed. 
     Adv. strongly &c. adj.; by force &c. n.; by main force &c. (by
compulsion) 744. 
     Phr. “our withers are unwrung” [Hamlet]. 
     Blut und Eisen[Ger]; coelitus mihi vires[Lat]; du fort au diable[Fr];
en habiles gens[Lat]; ex vi termini; flecti non frangi[Lat]; “he that wrestles with us strengthens our nerves and sharpens our skill” [Burke]; “inflexible in faith invincible in arms” [Beattie].

     #160.  Weakness.—­ N. weakness &c. adj.; debility, atony[obs3],
relaxation, languor, enervation; impotence &c. 158; infirmity; effeminacy, feminality[obs3]; fragility, flaccidity; inactivity &c. 683.
     anaemia, bloodlessness, deficiency of blood, poverty of blood.
     declension of strength, loss of strength, failure of strength;
delicacy, invalidation, decrepitude, asthenia[obs3],