renounce

(verb) give up, such as power, as of monarchs and emperors, or duties and obligations. Synonyms: abdicate. Example: "The king abdicated when he married a divorcee."

(verb) leave (a job, post, or position) voluntarily. Synonyms: vacate, resign, give up. Examples: "She vacated the position when she got pregnant." "The chairman resigned when he was found to have misappropriated funds."

(verb) turn away from; give up. Synonyms: foreswear, quit, relinquish. Example: "I am foreswearing women forever."

(verb) cast off. Synonyms: disown, repudiate. Examples: "She renounced her husband." "The parents repudiated their son."