Antonyms for the phrase "scares pants off of" include 'reassures', 'calms down', 'comforts', 'encourages', 'soothes', and 'settles'. These words represent the opposite emotions of fear and fright that the original phrase implies. While scares pants off of is often used to describe situations that are frightening, antonyms help us find words that convey the opposite thoughts and actions. When we say that someone 'reassures' us, we mean that they give us confidence and help us feel safe. Similarly, when we 'calm down' our nerves, we feel relaxed and composed. Hence, the antonyms of 'scares pants off of' are an excellent way to express positive emotions like comfort, encouragement, and calmness.