Harden

Part of speech: verb (v.)

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. "Harden not your heart." Ps. xcv. 8. I would harden myself in sorrow. Job vi. 10.

Part of speech: verb (v.)

1. To become hard or harder; to acquire solidity, or more compactness; as, mortar hardens by drying. The deliberate judgment of those who knew him [A. Lincoln] has hardened into tradition. The Century.

2. To become confirmed or strengthened, in either a good or a bad sense. They, hardened more by what might most reclaim. Milton.