V. render hard &c. adj.; harden, stiffen, indurate, petrify, temper,
ossify, vitrify; accrust[obs3]. 
     Adj. hard, rigid, stubborn, stiff, firm; starch, starched; stark,
unbending, unlimber, unyielding; inflexible, tense; indurate, indurated; gritty, proof.
     adamant, adamantine, adamantean[obs3]; concrete, stony, granitic,
calculous, lithic[obs3], vitreous; horny, corneous[obs3]; bony; osseous, ossific[obs3]; cartilaginous; hard as a rock &c. n.; stiff as buckram, stiff as a poker; stiff as starch, stiff as a board.

     #324.  Softness. —­ N. softness, pliableness &c. adj.; flexibility;
pliancy, pliability; sequacity[obs3], malleability; ductility, tractility[obs3]; extendibility, extensibility; plasticity; inelasticity, flaccidity, laxity.
     penetrability.
     clay, wax, butter, dough, pudding; alumina, argil; cushion, pillow,
feather bed, down, padding, wadding; foam.
     mollification; softening &c.v. 
     V. render -soft &c. adj.; soften, mollify, mellow, relax, temper;
mash, knead, squash.
     bend, yield, relent, relax, give.
     plasticize’. 
     Adj. soft, tender, supple; pliant, pliable; flexible, flexile; lithe,
lithesome; lissom, limber, plastic; ductile; tractile[obs3], tractable; malleable, extensile, sequacious[obs3], inelastic; aluminous[obs3]; remollient[obs3].
     yielding &c. v.; flabby, limp, flimsy.
     doughy, spongy, penetrable, foamy, cushiony[obs3].
     flaccid, flocculent, downy; edematous, oedematous[obs3],
medullary[Anat], argillaceous, mellow.
     soft as butter, soft as down, soft as silk; yielding as wax, tender as
chicken.

     #325.  Elasticity. —­ N. elasticity, springiness, spring, resilience,
renitency, buoyancy.
     rubber, India(n) rubber, latex, caoutchouc, whalebone, gum elastic,
baleen, natural rubber; neoprene, synthetic rubber, Buna-S, plastic.
     flexibility, Young’s modulus. 
     V. stretch, flex, extend, distend, be elastic &c. adj.; bounce, spring
back &c. (recoil) 277. 
     Adj. elastic, flexible, tensile, spring, resilient, renitent, buoyant;
ductile, stretchable, extendable. 
     Phr. the stress is proportional to the strain.

     #326.  Inelasticity. —­ N. want of elasticity, absence of elasticity
&c. 325; inelasticity &c. (softness) 324,
     Adj. unyielding, inelastic, inflexible &c. (soft) 324;
irresilient[obs3].

     #327.  Tenacity. —­ N. {ant. 328} tenacity, toughness, strength;
(cohesion) 46; grip, grasp, stickiness, (cohesion) 46; sequacity[obs3]; stubbornness &c. (obstinacy); glue, cement, glutinousness[obs3], sequaciousness[obs3], viscidity, (semiliquidity) 352.
     leather; white leather, whitleather[obs3]; gristle, cartilage.
     unbreakability, tensile strength. 
     V. be tenacious &c. adj.; resist fracture.
     grip, grasp, stick (cohesion) 46. 
     Adj. tenacious, tough, strong, resisting, sequacious[obs3], stringy,
gristly cartilaginous, leathery, coriaceous[obs3], tough as whitleather[obs3]; stubborn &c. (obstinate) 606.
     unbreakable, indivisible; atomic.