patronise

(verb) do one's shopping at; do business with; be a customer or client of. Synonyms: patronize, shop, shop at, buy at, frequent, sponsor.

(verb) assume sponsorship of. Synonyms: sponsor, patronize.

(verb) treat condescendingly. Synonyms: patronize, condescend.

(verb) be a regular customer or client of. Synonyms: patronize, patronage, support, keep going. Examples: "We patronize this store." "Our sponsor kept our art studio going for as long as he could."