stir up
stir up {v.}
1. To bring (something) into being, often by great exertion or activity; cause.
It was a quiet afternoon, and John tried to stir up some excitement.
Bob stirred up a fight between Tom and Bill.
Compare: WHIP UP (2).
2. To cause (someone) to act; incite to action or movement; rouse.
The coach's pep talk stirred up the team to win.
When Mary heard what Betty said about her, she became stirred up.
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Source: A Dictionary of American Idioms