Donkey, rock.... really anything that is stubborn or unmoving. Mule is often used.
Stubborn is an adjective, because it describes something.
The comparative form of the word "stubborn" is "more stubborn," and the superlative form is "most stubborn." These forms are used to compare the degree of stubbornness between two or more things. In English grammar, adjectives like "stubborn" follow this pattern when comparing levels of intensity or quality.
The word stubborn is an adjective, a word to describe a noun, such as a stubborn child. The noun form is stubbornness.
stubborn
Stubborn
This child is so stubborn. Why do you act so stubborn?
Stubborn = Uparty.
Stubborn is an adjective.
Stubborn as a mule.
stubborn stubbornly
Well, if you're refusing to be stubborn, that makes you awfully stubborn, now doesn't it?
The word 'stubborn' is not a noun or a pronoun. The word 'stubborn' is an adjective, a word that describes a noun, for example, a stubborn child, a stubbornproblem.