Meaning & Definition
verb
To make or become hard or harder.
The sculptor decided to harden the clay to maintain its shape.
To strengthen or toughen emotionally or psychologically.
Years of hardship had hardened her, making it difficult for her to trust others.
To increase in degree of firmness or toughness, especially under certain conditions.
The cement will harden over time, creating a solid structure.
To fix in a certain state or position.
After cooling, the metal will harden, ensuring its durability.
To make resistant to external influences.
He aimed to harden the defenses of the castle against invaders.
Etymology
From Old English 'hardian', meaning to make hard.
Common Phrases and Expressions
harden one's heart:
To become emotionally unresponsive.
harden the lines:
To apply stricter or tougher measures.
harden one's resolve:
To strengthen one's determination.
Slang Meanings
To toughen up or prepare oneself.
After that hard workout, I needed to harden for the next session.
To become emotionally indifferent.
He really hardened after the breakup.