An archaic verb meaning to clothe, dress, or attire someone; to outfit or decorate.
From 'be-' combined with 'tire,' an archaic word meaning attire or headdress. In Middle English, 'tire' or 'tyre' was a common word for clothing, especially a woman's headdress or elaborate dress.
Medieval tailors and dressmakers would have used 'betire' to describe dressing someone up elaborately—it's why we still see 'tire' and 'attire' in modern English, both relating to dressing oneself for a specific social moment.
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