MULEHEADED Meaning of MULEHEADED in English ˈ ̷ ̷| ̷ ̷ ̷ ̷ adjective : stubborn , pigheaded• mule·head·ed·ly ˈ ̷ ̷| ̷ ̷ ̷ ̷ ̷ ̷ adverb Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012