- patronize (mostly US)
1. To make a patron
2. To treat as inferior unfairly, talk down to, treat condescendingly; to speak to someone as if they are somehow intellectually inferior to oneself, thereby giving the impression their opinion and views are less important than one's own.
Example usage: "Don't patronise me! I completely understand what i saw and heard."
3. To make oneself a regular customer of a business.