What does Shakespeare mean by bearded the pard?

The quote "bearded the pard” in William Shakespeare's Twelfth Night refers to Malvolio disguising himself as a fool by dressing in extravagant clothing, including wearing fake facial hair that reaches down to his waist. The word "pard" was commonly used to refer to leopards or panthers during Shakespeare's time.

Therefore, by saying that “bearding the pard”, it means Malvolio has dressed in clothing more suitable for a fool than someone of his class and has therefore made a mockery of himself like a fool.