| noun | abnormal hardening or thickening of tissue |
| noun | the process of becoming hard or solid by cooling or drying or crystallization “the hardening of concrete” |
| noun | the act of making something harder (firmer or tighter or more compact) |
| verb | become hard or harder “The wax hardened” |
| verb | make hard or harder “The cold hardened the butter” |
| verb | harden by reheating and cooling in oil “temper steel” |
| verb | make fit “This trip will season even the hardiest traveller” |
| verb | cause to accept or become hardened to; habituate “He was inured to the cold” |
| harden | verb | become hard or harder |
| solidify | verb | make solid or more solid; cause to solidify |
| set | verb | become gelatinous |
| cure | verb | prepare by drying, salting, or chemical processing in order to preserve |
| hardening | noun | the process of becoming hard or solid by cooling or drying or crystallization |
| induration | noun | any pathological hardening or thickening of tissue |
| temper | noun | the elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking |
| tempering | noun | hardening something by heat treatment |
| temperance | noun | the act of tempering |