Harden
Harden (hard"'n) , transitive verb
[Old English hardnen, hardenen.]
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.
I would harden myself in sorrow.
Harden , intransitive verb
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.
2.
To become confirmed or strengthened, in either a good or a bad sense.
They, hardened more by what might most reclaim.