The use of good is widespread in informal speech, especially after forms of do. It is, however, uncommon in formal writing and speech. Instead, we use well. This word is colorless and neutral, while good is emphatic and emotional. In sports, good has long been the adverb of choice. Although we often use good to describe a particular action or event, the adverb is an appropriate choice in most cases. Here are three common examples of its use in informal speech.