To decorate or dress up with beautiful ornaments, clothing, or embellishments; to cover or adorn.
From Middle English 'be-' (prefix meaning to cover or cause) + 'deck' (to adorn or clothe). This verb became standardized during the Renaissance when elaborate dressing was fashionable.
Unlike its archaic cousins, 'bedeck' survived into modern English because it became the poetic favorite for describing ornate dress—you'll find it in Victorian and Romantic poetry constantly.
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