1. The location of a visual perception along a continuum from black to white 
2. Intelligence as manifested in being quick and witty
   - cleverness, smartness 
3. The quality of being luminous; emitting or reflecting light
   - luminosity, brightness level, luminance, luminousness, light

Derived forms: brightnesses

See also: bright, dull

Type of: intelligence, light, lightness, physical property

Antonym: dullness

Encyclopedia: Brightness

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