Source : Webster's Revised Unabridged Dictionary (1913)

Fog \Fog\, v. t. [imp. & p. p. {Fogged}; p. pr. & vb. n.
   {Fogging}.]
   To envelop, as with fog; to befog; to overcast; to darken; to
   obscure.

Source : WordNet®

fogged
     adj : obscured by fog; "he could barely see through the fogged
           window" [syn: {foggy}]

fog
     n 1: droplets of water vapor suspended in the air near the ground
     2: an atmosphere in which visibility is reduced because of a
        cloud of some substance [syn: {fogginess}, {murk}, {murkiness}]
     3: confusion characterized by lack of clarity [syn: {daze}, {haze}]
     [also: {fogging}, {fogged}]

fog
     v : make less visible or unclear; "The stars are obscured by the
         clouds" [syn: {obscure}, {befog}, {becloud}, {obnubilate},
          {haze over}, {cloud}, {mist}]
     [also: {fogging}, {fogged}]

fogged
     See {fog}