Mix Things Up is a phrase that is often used to describe the act of combining different elements in order to create something new. The term can be used to refer to a variety of activities, such as mixing ingredients together to make a recipe, combining different colors to create a painting, or even rearranging furniture in a room. The crossword solutions for this phrase are STIR (4 letters) and ERR (3 letters). STIR is an action verb that means to move something around in a circular motion, while ERR is a verb that means to make a mistake or do something wrong. Together, these two words suggest that when one mixes things up, they may make mistakes or have unexpected results.