A hardening of character or feeling; obstinacy, stubbornness; callousness, want of feeling.

The quality of being indurate or spiritually hardened.

hardened condition, induration.

figurative. Hardness, insensibility, unfeelingness.

Freedom from, or insensibility to, suffering; hence, freedom from, or insensibility to, passion or feeling; passionless existence.

Insensibility or indifference to pain; want of feeling. Obsolete.

Absence of grief or sorrow; insensibility, callousness.

the quality of being flinty.

= dedolence, n.

The condition of being seared.

An unfeeling or obdurate state of mind; hard-heartedness, callousness. Now somewhat rare.

= indolence, n. 1.

Callousness.

= callus, n. (in various senses).

Fierceness, sternness, implacability. archaic.

Callousness, insensibility. Obsolete.

figurative. The quality or condition of being callous; lack of feeling; hard-heartedness; an instance of this.

figurative. The action or process of hardening or immobilizing (a person or thing); a hardened or immobile condition, esp. a state of temporary…

figurative. Esp. with reference to a person's feelings or character: something likened to a callus in being hard or in creating a barrier…

Lack of feeling; callous cruelty. Also occasionally: lack of genuine feeling, insincerity.

figurative. The action or process of hardening or immobilizing a person or thing; a hardened or immobile condition; a state of physical or mental…

the quality of being thoughtless or inattentive.