stiffen Definition

tighten, constrain, tighten up, toughen, strengthen, sharpen, reinforce, loosen, harden, soften, constrict, weaken, thicken, slacken, lengthen, clench, shiver, sag, clamp, unhinge, crack, bolster, lighten, fortify, rigescent, galvanize, restrict, tweak, stifle, cripple, prod, shake, intensify, flexed, push, shrivel, discourage, rattle, deflate, laxator, beefing, tentiginous, buckle, calcify, alter, flatten, subrigid, heighten, rile, unsettle, deter, irritate, uncurl, repel, lift, pandiculation, relent, defang, solidify, depress, dampen, curtail, aggravate, reshape, change shape, punish, deform, tetanize, discomfit, hobble, move involuntarily, inflame, reimpose, spur, stymie, pierce, impose, complicate, stir, diminish, straighten, stabilize, shatter, immobilize, rankle, dislodge, ramped, hinder, lessen, constringe, erode, bend, tenderize, unnerve, soothe, ratcheting, relaxes, invigorate, improve, dispirit,