When it comes to describing the radiance of light emanating from a source, there are numerous synonyms for the word "glow." Some popular choices include shine, radiance, brilliance, luminosity, and glowliness. Other options include gleam, brilliance, incandescence, luminescence, and effulgence. These synonyms differ in intensity and scope, with some focused on a more subtle illumination while others refer to a powerful and bright light. All in all, no matter which synonym you choose, they all refer to the beauty and natural radiance of light, and the various ways in which we can describe it.