Burning hot is an expression often used to describe extreme heat. However, there are plenty of antonyms that can be used instead of burning hot to describe lower temperatures. Words like chilly, cool, refreshing, and icy cold can be used to describe a pleasant, refreshing temperature. Additionally, terms like frigid, freezing, and arctic can be used to describe temperatures that are extremely cold. Other antonyms for burning hot include mild, temperate, lukewarm, and room temperature. Though burning hot may be a commonly used expression, it is important to remember that there are plenty of other words that can be used to describe different levels of heat.