'Unspell' definitions:

Definition of 'unspell'

From: WordNet
verb
Release from a spell [ant: spell]

Definition of 'Unspell'

From: GCIDE
  • Unspell \Un*spell"\, v. t. [1st pref. un- + spell.] To break the power of (a spell); to release (a person) from the influence of a spell; to disenchant. [R.] [1913 Webster]
  • Such practices as these, . . . The more judicious Israelites unspelled. --Dryden. [1913 Webster]