harden

v 1: become hard or harder; "The wax hardened" [ant: {soften}]

2: make hard or harder; "The cold hardened the butter" [ant: {soften}]

3: harden by reheating and cooling in oil; "temper steel" [syn:

{temper}]

4: make fit; "This trip will season even the hardiest

traveller" [syn: {season}]

5: cause to accept or become hardened to; habituate; "He was

inured to the cold" [syn: {inure}]