Synonyms and related words :
anneal, backed, brutalize, cake, calcified, calcify, callous, calloused, case harden, case-hardened, concrete, congeal, cornify, crusted, crusty, crystallized, dry, firm, fossilize, fossilized, granulated, harden, hardened, hornified, incrusted, indurated, inure, lapidified, lapidify, lithify, ossified, ossify, petrified, petrify, reinforced, rigidified, sclerotic, set, solidified, solidify, steel, steeled, stiffened, strengthened, temper, toughen, toughened, vitrified, vitrify