adjective
resplendent
rih-SPLEN-dunt/rɪˈsplendənt/
Strikingly beautiful or brilliant in appearance.
The peacock looks resplendent as it fans its colorful train.

Etymology
The central idea is “shining,” with re- perhaps adding emphasis. Brilliant light or color provides the image for beauty and magnificence that seem to shine.
In context
the largest courtyard—empty, the whole of it mine, resplendent in gold and jade, which took me aback.
More examples
- She arrives resplendent in a gold evening gown.
- The restored ballroom is resplendent with crystal chandeliers.
- Maples stand resplendent in their red and orange fall leaves.
Forms
resplendent
resplendence noun — Striking beauty or brilliance in appearance.
resplendently adverb — In a brilliantly beautiful or impressive way.