The phrase "curls lip" refers to a facial expression that conveys disdain or contempt. Some antonyms for this expression could include "smiles," "laughs," or "grins." Each of these words suggests a positive or pleasant emotion and would be the opposite of "curls lip," which is often associated with negative feelings. Other antonyms might include "approves," "praises," or "respects," since these words suggest a positive attitude towards someone or something. Overall, the antonyms for "curls lip" are words that indicate positive emotions or attitudes, unlike the negative connotations of the original phrase.