IPA: /ˈmjuːlɪʃnəs/
KK: /ˈmjuːlɪʃnəs/
The quality of being stubborn or obstinate, like a mule.
His mulishness made it difficult for him to accept any advice from others.
Mulishness → It is formed from "mule" (from Latin *mulus*, meaning a hybrid animal, specifically the offspring of a male donkey and a female horse) and "-ish" (meaning having the quality of) combined with "-ness" (meaning the state or condition of). The word "mulishness" refers to the state of being stubborn or obstinate, akin to the nature of a mule.
Think of a mule, which is known for its stubbornness, and remember that 'mulishness' describes the quality of being stubborn.