The word simperer is often used to describe someone who smiles or laughs in an insincere or affected manner. However, there are several other synonyms for the word that can be used to convey this same meaning. A few examples include twee, coy, and coquettish. These words all indicate a type of artificial charm or overly flirtatious demeanor, and can be used interchangeably with simperer in many contexts. Other synonyms for the word may include smirker, grinner, or even gigglebox, depending on the tone and specific connotation that you want to convey. Ultimately, the choice of synonym will depend on the desired effect and the nuances of the situation at hand.