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Webster 1913 Edition
Brightness
1.
The quality or state of being bright; splendor; luster; brilliancy; clearness.
A sudden
brightness
in his face appear. Crabbe.
2.
Acuteness (of the faculties); sharpness 9wit.
The
brightness
of his parts . . . distinguished him. Prior.
Syn. – Splendor; luster; radiance; resplendence; brilliancy; effulgence; glory; clearness.
Webster 1828 Edition
Brightness
BRIGHTNESS
,Noun.
1.
Acuteness, applied to the faculties; sharpness of wit; as the brightness of a man's parts.