Harden

·vi To become confirmed or strengthened, in either a good or a bad sense.

II. Harden ·vi To become hard or harder; to acquire solidity, or more compactness; as, mortar hardens by drying.

III. Harden ·vt To make hard or harder; to make firm or compact; to Indurate; as, to harden clay or iron.

IV. Harden ·vt 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.