The expression "curl one lip" refers to a facial gesture often associated with contempt, disdain, or disapproval. It is a visual representation of a negative emotional state that can be conveyed through body language. An antonym for "curl one lip" is to smile, which represents a positive and welcoming disposition. Other antonyms for this expression can include a neutral face, a friendly smile, or even an expression of curiosity or interest. By using different facial expressions, we can convey a range of emotions and reactions, from judgment to warmth, from skepticism to openness. Understanding the power of body language can help us communicate more effectively in different contexts, whether personal or professional.