What is the meaning of renounce?

verb

• Give up, such as power, as of monarchs and emperors, or duties and obligations.
  • usage: "The King abdicated when he married a divorcee"
  • synonyms: abdicate
• Leave (a job, post, or position) voluntarily.
  • usage: "She vacated the position when she got pregnant"; "The chairman resigned when he was found to have misappropriated funds"
  • synonyms: vacate, resign, give up
• Turn away from; give up.
  • usage: "I am foreswearing women forever"
  • synonyms: foreswear, quit, relinquish
• Cast off.
  • usage: "She renounced her husband"; "The parents repudiated their son"
  • synonyms: disown, repudiate