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1. The process whereby water particles become visible in the sky
   - clouding up

1. Make overcast or cloudy
   - overcast
    
2. Make less visible or unclear
   "The stars are obscured by the clouds"
   - obscure, befog, becloud, obnubilate, haze over, fog, mist
    
3. Billow up in the form of a cloud
   "The smoke clouded above the houses"
    
4. Make gloomy or depressed
   "Their faces were clouded with sadness"
    
5. Place under suspicion or cast doubt upon
   - defile, sully, corrupt, taint
    
6. Make less clear
   "the stroke clouded memories of her youth"
    
7. Colour with streaks or blotches of different shades
   - mottle, dapple
    
8. Make milky or dull
   "The chemical clouded the liquid to which it was added"

Derived forms: cloudings

See also: cloud over

Type of: affect, alter, billow, change, conceal, darken, deflower, dull, evaporation, hide, impair, impress, mar, modify, move, spoil, spot, strike, vapor [US], vaporisation [Brit], vaporization, vapour [Brit, Cdn], vitiate, wallow

Encyclopedia: Cloud Cloud, Castle, Lake