There are various synonyms for the phrase "curled one lip at," which means to show a gesture of disdain or contempt. Some of the synonyms for this phrase include sneered, grimaced, frowned, scowled, snarled, snickered, smirked, and twisted the lip. These words are all different ways of describing facial expressions that convey displeasure or disapproval. When using these synonyms, it is important to also consider the context and tone of the situation, as these words can have different connotations and levels of intensity. By using appropriate synonyms, one can effectively communicate the intended message with more precision and clarity.