harden
Transitive VerbIntransitive Verb
Meanings
Transitive Verb
[~ something]
To make or become firm, rigid, or solid in texture.
"The concrete takes several hours to harden completely."
Transitive Verb
[~ someone]
To make someone less sensitive to pain, suffering, or emotional distress through experience.
"Years of working in the emergency room had hardened her to the sight of blood."