brightness

US /ˈbraɪt.nəs/
UK /ˈbraɪt.nəs/
"brightness" picture
1.

the quality or state of giving out or reflecting light

:
The brightness of the sun made it hard to see.
Adjust the screen brightness for better viewing.
2.

the quality of being intelligent and quick-witted

:
Her academic brightness was evident in her grades.
He always impressed everyone with his intellectual brightness.