1. To combine something into a liquid, substance, or mixture by stirring. A noun or pronoun is used between "stir" and "into." You need to stir the oil into the whisked egg yolks very slowly or the mixture will separate. She stirred a bit of honey into the medicine to make it taste a little better.

2. To excite, rouse, or provoke someone into some state or condition. A noun or pronoun is used between "stir" and "into." The politician stirred the crowd into a frenzy with her rhetoric. His invigorating words stirred us all into action.