The Oxford Thesaurus An A-Z Dictionary of Synonyms - radiancen.

1) radiancy, splendour, brightness, brilliance, resplendence, luminosity, luminousness, dazzle, sparkle, coruscation, scintillation, twinkle, effulgence, refulgence, incandescence, glow, phosphorescence, gleam, lustre, shimmer, shine: As Aladdin rubbed the ring, it began to glow with an inner radiance and then - suddenly - a genie appeared. 2) warmth, gladness, joy, pleasure, happiness, cheeriness, delight: It was good to see again the radiance of the family at Christmas dinner.