The word "Temperer" is a noun that refers to someone who moderates or adjusts something to suit the situation. Synonyms for this word include adjuster, regulator, balancer, controller, and modifier. These terms describe people who ensure that things are in proper balance. A temperer might adjust the temperature of a room, or regulate the flow of air or liquid to a machine. They may balance a chemical reaction, control the intensity of light, or modify the settings on a device. In any case, a temperer's role is to ensure that things are operating at their most efficient and effective state.