adjective
radiant
RAY-dee-unt/ˈreɪdiənt/
Showing great happiness or beauty.
Her radiant smile shows her joy.

Etymology
Beaming and shining widened from literal light to warmth, happiness, and beauty.
More examples
- The bride is radiant with happiness.
- His radiant smile welcomes the visitors.
Forms
radiant
Similar words
- beaming
- Showing happiness through a broad smile.
- joyful
- Feeling or expressing great happiness.