Here you will find one or more explanations in English for the word Undevil.
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Undevil
Undevil Un*dev"il, v. t. [1st pref. un- + devil.]
To free from possession by a devil or evil spirit; to
exorcise. [Obs.]
They boy having gotten a habit of counterfeiting . . .
would not be undeviled by all their exorcisms.
--Fuller.
Meaning of Undevil from wikipedia