Scaring the pants off is a phrase used to describe a situation where someone is frightened or unnerved. Antonyms for this phrase would include calming down, reassuring, and comforting. In situations where people may feel scared or uneasy, it's important to provide support and help them relax. Offering a listening ear, a hug, or a warm cup of tea can go a long way in easing someone's fear. Other antonyms for scaring the pants off can include enchanting, entertaining, and amusing. In these instances, people feel happy, intrigued, and excited rather than scared or fearful.