Habotnic
Someone who’s so pigheaded, they’d argue with a ghost if it disagreed with them. They’ll never change, no matter how much you cuss them out.
My aunt is a habotnic. She still uses the same soap from the 80s.
My brother called me a habotnic for thinking pizza is better than meatloaf.
My cousin wouldn’t stop arguing with the microwave just because it wouldn’t heat up his coffee.