To remove a charm or spell from something; to disenchant or break magic (a rare or poetic term).
From de- (to reverse, remove) + charm (from Old French charme, from Latin carmen meaning song or spell). The term appears occasionally in fantasy literature and poetic texts.
Fantasy authors love 'decharm' because it's exactly what you need when a wizard's curse wears off—but the word is so rare that most people would say 'break the spell' instead, showing how literary genres create their own vocabulary.
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