luminousness

/ˈluːmɪnəsnəs/
noun
  1. The quality of giving off or reflecting light; brightness or glow.
    • The artist used special paints to capture the luminousness of the sunset.
    • The luminousness of the fireflies amazed the children.
    • The luminousness of the full moon made the night almost as bright as day.
  2. The quality of being very clear, intelligent, or easy to understand.
    • His writing is known for its luminousness and simplicity.
    • The teacher praised the luminousness of the student's argument.
    • The luminousness of her explanation helped everyone grasp the difficult concept.
Antonyms
What does "luminousness" mean? | whatsthatwordmean | whatsthatwordmean