Example : The King abdicated when he married a divorcee.

Synonyms : abdicate

Example : She vacated the position when she got pregnant.
The chairman resigned when he was found to have misappropriated funds.

Synonyms : give up, resign, vacate

Example : I am foreswearing women forever.

Synonyms : foreswear, quit, relinquish

Example : She renounced her husband.
The parents repudiated their son.

Synonyms : disown, repudiate