What is another word for cool down?
Pronunciation: [kˈuːl dˈa͡ʊn] (IPA) 
Cool down is commonly used to refer to lowering the temperature of something or someone. However, it also has several other synonyms that can convey similar meanings depending on the context. For example, chill out, calm down, and relax all imply a decrease in tension or anxiety. Similarly, compose oneself, collect oneself, and regain composure suggest a return to emotional stability or balance. Meanwhile, aerate, ventilate, and air out all indicate a process of circulating air to lower the temperature of a space or object. Finally, dampen, moisten, and wet can all describe the act of reducing heat by adding water. Thus, there are several synonyms for cool down that can be used in different scenarios to convey a variety of meanings.
