WordWeb Online

1. Become dark or darker
   "The sky darkened"
    
2. Tarnish or stain
   "a scandal that darkened the family's good name"
    
3. Make dark or darker
   "darken a room"

Derived forms: darkened, darkening, darkens

See also: darkening

Type of: alter, change, defile, maculate, modify, stain, sully, tarnish

Antonym: brighten, lighten

Encyclopedia: Darken