|v. t.||1.||To make hard or harder; to make firm or compact; to indurate; as, to harden clay or iron.|
|2.||To accustom by labor or suffering to endure with constancy; to strengthen; to stiffen; to inure; also, to confirm in wickedness or shame; to make unimpressionable.|
|v. i.||1.||To become hard or harder; to acquire solidity, or more compactness; as, mortar hardens by drying.|
|2.||To become confirmed or strengthened, in either a good or a bad sense.|
|Verb||1.||harden - become hard or harder; "The wax hardened"|
soften - become soft or softer; "The bread will soften if you pour some liquid on it"
|2.||harden - make hard or harder; "The cold hardened the butter"|
soften - make soft or softer; "This liquid will soften your laundry"
|3.||harden - harden by reheating and cooling in oil; "temper steel"|
|4.||harden - make fit; "This trip will season even the hardiest traveller"|
|5.||harden - cause to accept or become hardened to; habituate; "He was inured to the cold"|