Focus on the pronunciation of stir
English definition of “stir”
/stɜr/ v [I/T] (-rr-) (MIX)
› to mix liquids or other substances, or to move an object such as a spoon in a circular movement: [T] Chad stirred the thick paint in the buckets. [I] Add tomatoes, stir, and bring to boil. [M] Let the rice sit, and then stir it up.