Tidbit from Merriam-Webster: “Meretricious can be traced back to the Latin verb merere, meaning ‘to earn, gain, or deserve.’ It shares this origin with a small group of other English words, including ‘merit, meritorious, and emeritus.’ But, while these words can suggest some degree of honor or esteem, ‘meretricious’ is used to suggest pretense, insincerity, and cheap or tawdry ornamentation.”
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".