To deny; to show the contrary of; to deny legitimacy or achievement of any kind.
To strongly and solemnly refuse to own or acknowledge; to deny responsibility for, approbation of, and the like.
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.