transitive. To deprive of feeling or emotion; to make callous. Chiefly in to hard a person's heart.

transitive. To make resistant to emotion, desensitize; to render callous or unfeeling. Also: to inure to or against an emotion, feeling, etc…

transitive. To make heavy or dull; hence, to harden (the conscience, heart).

To indurate, harden. Hence figurative to make callous or indifferent. Also in good sense: to make sturdy or robust, to strengthen. Obsolete.

transitive. = indurate, v. 2.

To harden (the heart, etc.); to render callous or unfeeling; to make stubborn or obstinate.

transitive. To make obdurate (obdurate, adj. 1); to harden in wickedness, or against moral influence; to harden the heart of. Also (occasionally) in…

transitive. To harden; to render callous; also figurative. Obsolete (at least in figurative sense).

transitive. To make callous or unfeeling. Also reflexive.

figurative. Chiefly after 1 Timothy iv. 2, to render (the conscience) incapable of feeling.

figurative. To ‘sear’, deaden, render insensible (the conscience, feelings, etc.). In allusion to 1 Timothy iv. 2 κεκαυτηριασμένων τὴν ἰδίαν συνεί…

transitive. To make hard, to harden.

transitive. = obdurate, v. 1.

transitive. To petrify as by the glance of a Gorgon; to render hard or stony.

To turn into stone, or make hard like stone; to petrify. (Chiefly figurative) Obsolete.

figurative. To change as if into stone. transitive. To deprive of feeling, vitality, or capacity for change, development, etc.; to harden, deaden…

transitive. To petrify.

transitive. To harden (a person's heart); to make obdurate. rare.

transitive. figurative. To harden in constitution or spirit; to make callous or indifferent; to desensitize.

figurative. transitive. To harden; to cause to become emotionally callous; to cause to become rigid or fixed.

transitive. To harden (a person, a person's feelings, etc.); to make callous, desensitize. Cf. hard-boiled, adj. 2b.