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Refulgent
Visual Vividity
Use 'refulgent' to describe something very bright that stands out vividly in the surrounding environment. 
Literary Flair
'Refulgent' adds a poetic or sophisticated touch to a description, suitable for creative writing or literature. 
Not for Casual Talk
Seen as old-fashioned or overly formal, 'refulgent' isn't commonly used in casual, everyday conversations. 