stir upphrasal verb
Definition of stir up
1 : to cause (someone) to feel a strong emotion and a desire to do something The speech stirred up the crowd.
2 : to cause (something) to move up into and through the air or water The workers stirred up a lot of dust.
3 : to cause (something, usually something bad or unpleasant) to happen They're trying to stir up trouble. stirring up racial hatred His critical comments certainly stirred things up.