What term is synonymous with an artist's or poet's brightness?

The term synonymous with an artist's or poet's brightness is effulgence. This word specifically refers to a brilliant radiance or a shining quality that embodies creativity and inspiration. When describing an artist or a poet, effulgence conveys not just the light they produce, but also the transformative and impactful nature of their work. This term captures the essence of their creative brilliance and the way their artistry illuminates and energizes their audience.

While words like luminosity, radiance, and vividness also describe qualities of brightness, they may not fully encapsulate the profound artistic glow that effulgence conveys in the context of creativity and expression. Each of these words has its own nuances, with luminosity often referring to the physical quality of light, radiance suggesting a warmth or glow, and vividness relating to clarity and intensity of color or imagery. Thus, effulgence is the most fitting term to represent an artist's or poet's intrinsic brightness.