To declare; to assert, affirm.
To administer the vows of a religious order to (someone); to admit to a religious order.
To declare one's adherence to (a religion, deity, principle etc.).
To work as a professor of; to teach.
To declare oneself (to be something).
To make a claim (to be something); to lay claim to (a given quality, feeling etc.), often with connotations of insincerity.
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.