to encourage somebody to do something; to make somebody feel they must do something
- 1to make people feel strong emotions to stir up hatred
- 2to try to cause arguments or problems to stir up a debate Whenever he's around, he always manages to stir up trouble. We've got enough problems without you trying to stir things up.
- 3to make something move around in water or air The wind stirred up a lot of dust.