dark·en /ˈdɑrkən/
 (vi.)變深,暗下來;(vt.)弄暗,使糢糊
 Dark·en, v. i. To grow or darker.
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 Dark·en v. t. [imp. & p. p. Darkened p. pr. & vb. n. Darkening ]
 1. To make dark or black; to deprive of light; to obscure; as, a darkened room.
    They [locusts] covered the face of the whole earth, so that the land was darkened.   --Ex. x. 15.
 So spake the Sovran Voice; and clouds began
 To darken all the hill.   --Milton.
 2. To render dim; to deprive of vision.
    Let their eyes be darkened, that they may not see.   --Rom. xi. 10.
 3. To cloud, obscure, or perplex; to render less clear or intelligible.
    Such was his wisdom that his confidence did seldom darkenhis foresight.   --Bacon.
    Who is this that darkeneth counsel by words without knowledge?   --Job. xxxviii. 2.
 4. To cast a gloom upon.
 With these forced thoughts, I prithee, darken not
 The mirth of the feast.   --Shak.
 5. To make foul; to sully; to tarnish.
 I must not think there are
 Evils enough to darken all his goodness.   --Shak.
 darken
      v 1: become dark or darker; "The sky darkened" [ant: brighten]
      2: become or make darker; "The screen darkend"; "He darkened
         the colors by adding brown" [syn: dim] [ant: brighten]
      3: tarnish or stain; "a scandal that darkened the family's good
         name"
      4: make dark or darker; "darken a room" [ant: brighten]