"Dimmest" Natural Recordings by Native Speakers
Dimmest refers to the darkest or least bright of something, especially light. It can also be used to describe something that is of poor or mediocre quality. For example, "the dimmest light in the room" or "the dimmest star in the galaxy".
The word "dimmer" refers to a device that reduces the brightness of an electric light by partially cutting off or reducing the flow of electric current to it, used to adjust the intensity of the light.