To accept, support, or take on as one’s own (an idea or a cause).
To become/get married to.
To abandon, forsake, discontinue (an action, habit, intention, etc), sometimes by open declaration.
To cast off, repudiate.
To fail to follow suit; playing a card of a different suit when having no card of the suit led.
To make a renunciation of something.
To give up, resign, surrender.
To surrender formally some right or trust.
To decline further association with someone or something, disown.
An act of renouncing.