disabus

v. t. [ imp. & p. p. Disabused p. pr. & vb. n. Disabusing. ] [ Pref. dis- + abuse; cf. F. désabuser. ] To set free from mistakes; to undeceive; to disengage from fallacy or deception; to set right; -- often used with of; as, to disabuse one of his illusions. [ 1913 Webster ]

To undeceive and disabuse the people. South. [ 1913 Webster ]

If men are now sufficiently enlightened to disabuse themselves or artifice, hypocrisy, and superstition, they will consider this event as an era in their history. J. Adams. [ 1913 Webster ]