blaze, burst, flash, glare, glimmer, glint, glitter, sparkle, twinkle, flicker, blaze up, erupt, flare up, outburst, escalation, intensification
glow - luminosity - brilliance - shine - light - brightness - luster - sheen - gleam - sparkle - effulgence - resplendence - radiancy
Radiance refers to a vivid, bright, or glowing quality, most often associated with light or visual appearance. In physics and optics, it can describe the intensity or emission of light from a surface. In everyday language, it is frequently used to portray a person’s luminous beauty, healthy skin, or joyful expression, as if they are glowing from within. Radiance can also describe the brilliance of objects such as the sun, stars, or polished surfaces. Metaphorically, it may indicate an inspiring, uplifting presence or atmosphere that seems to shine with warmth, positivity, or energy.