HARDENED
- HARDEN, to make hard [v]
- Having become or been made hard or harder
- Strengthened or made secure against attack, esp. by nuclear weapons
- Experienced in a particular job or activity and therefore not easily upset by its more unpleasant aspects
- Utterly fixed in a habit or way of life seen as bad
- HARDEN, to make hard (firm and unyielding) [v]