'Undevil' definitions:

Definition of 'Undevil'

From: GCIDE

Undevil \Un*dev"il\, v. t. [1st pref. un- + devil.] To free from possession by a devil or evil spirit; to exorcise. [Obs.] [1913 Webster]
They boy having gotten a habit of counterfeiting . . . would not be undeviled by all their exorcisms. --Fuller. [1913 Webster]