An obstinate individual who is so set in their ways that they will refuse all new ideas, even when the idea presented is something the person likes or would benefit them.
Dude, I know you want to come to the fair with us, quit being a buttwad.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".