Mortify

verb

1. To discipline (one's body, appetites etc.) by suppressing desires; to practise abstinence on.

   "Some people seek sainthood by mortifying the body."

2. (usually used passively) To embarrass, to humiliate. To injure one's dignity.

   "I was so mortified I could have died right there; instead I fainted, but I swore I'd never let that happen to me again."

3. To kill.
4. To reduce the potency of; to nullify; to deaden, neutralize.
5. To kill off (living tissue etc.); to make necrotic.