noun
brilliancy
BRIL-yun-see/ˈbrɪljənsi/
Exceptional brightness or vividness.
The device's brilliancy floods the room with intense light.

Etymology
Brilliancy names the quality of being brilliant. The image of sparkling light extends to exceptional intelligence or excellence, treating outstanding qualities as a kind of brightness.
In context
These are filaments, and they are unequal in brilliancy."
brilliancy award for his solution. My solution involved induction and a cubic polynomial.
More examples
- Years of sunlight have reduced the brilliancy of the fabric's colors.
- Her brilliancy is evident in how quickly she grasps complex ideas.
- The grandmaster's latest brilliancy secures an unexpected victory.
Forms
brilliancy
brilliant adjective — Shining brightly or showing vivid colors.
brilliance noun — Striking brightness or richness of color.
Similar words
- brightness
- Describes light intensity without necessarily suggesting anything striking.
- vividness
- Emphasizes strong, clear colors rather than emitted light.
- radiance
- Suggests light shining outward rather than vivid color alone.