What's the opposite of a hot fire? The antonym of hot might be the coolest word of all. In this worksheet your child will need to look at the list of words, and then decide what word in right hand column is the opposite of one on the left. He will then need to draw a line from each word to its antonym. After completing this worksheet your child will have practiced her spelling and vocabulary skills, as well as learned about the important concept of antonyms.