The meaning of "curled one's lip at" refers to a facial expression indicating disgust or contempt. Its antonyms refer to expressions conveying different emotions, such as joy, contentment, or admiration. Some antonyms of "curled one's lip at" include "smiling," "laughing," "grinning," "praising," or "complimenting." These antonyms are indicative of positive emotions and often denote the approval of something or someone. By contrast, "curled one's lip at" suggests displeasure, rejection, or disdain. The choice of an antonym for this phrase depends on the context and the message that the speaker wants to convey.