patronize

verb
  1. 1

    To act as a patron of; to defend, protect, or support.

  2. 2

    To make oneself a customer of a business, especially a regular customer.

  3. 3

    To assume a tone of unjustified superiority toward; to talk down to, to treat condescendingly.

  4. 4

    To blame, to reproach.

Source: https://en.wiktionary.org/wiki/patronize