WordWeb Online

1. Do one's shopping at; do business with; be a customer or client of
   - patronize, shop, shop at, buy at, frequent, sponsor
    
2. Assume sponsorship of
   - sponsor, patronize
    
3. Treat condescendingly
   - patronize, condescend
    
4. Be a regular customer or client of
   "We patronise this store";
   - patronize, patronage, support, keep going

Derived forms: patronising, patronises, patronised

Type of: back up, foster, interact, nurture, support

Antonym: boycott