patronize

verb

1.
assume sponsorship of
Derived from:
patron
Exemplifies:
American spelling
2.
do one's shopping at; do business with; be a customer or client of
Antonym:
boycott
Derived from:
patron
Exemplifies:
American spelling
3.
treat condescendingly
Exemplifies:
American spelling
4.
be a regular customer or client of
Derived from:
patron
Exemplifies:
American spelling