When it comes to synonyms for the phrase "mouth bows," there are a variety of different options to choose from. Some possible choices might include terms like puckers, purses, or smirks, which all refer to different ways of manipulating the lips and mouth in order to create a particular expression. Other alternatives might include phrases like "grimaces," "grins," or "smiles," each of which describes another type of facial gesture commonly associated with the mouth. Ultimately, the best synonym for "mouth bows" will depend on the context in which it is being used and the specific shades of meaning that one is attempting to convey.