Synonyms for Patronize (same or very similar meaning)
WordNet sense 1 (do one's shopping at; do business with; be a customer or client of):
frequent, shop, sponsor, patronise, frequent, buy at, shop atWordNet sense 2 (treat condescendingly):
condescendWordNet sense 3 (be a regular customer or client of):
patronage, support, keep goingFrom the ODE community, based on WordNetadd/edit