Definitions

1. verb

to make something harder than necessary or to become too hard; to harden to an excessive degree

“The metal overhardened during the manufacturing process, making it brittle and prone to cracking.”

2. verb

to become excessively hardened in one’s attitudes or opinions

“After years of negative experiences, the person had overhardened and become increasingly resistant to change.”

3. verb

to cause something to become excessively hardened

“The harsh environment of the desert can overharden the skin of people who spend too much time outdoors without protection.”

4. noun

the process or state of becoming excessively hardened

“The overhardening of the metal led to a significant increase in production costs.”