Source : Webster's Revised Unabridged Dictionary (1913)

Mucky \Muck"y\, a.
   1. Filthy with muck; miry; as, a mucky road. ``Mucky filth.''
      --Spenser.

   2. Vile, in a moral sense; sordid. [Obs.] --Spenser.

            Mucky money and false felicity.       --Latimer.

Source : WordNet®

mucky
     adj 1: (of soil) soft and watery; "the ground was boggy under
            foot"; "a marshy coastline"; "miry roads"; "wet mucky
            lowland"; "muddy barnyard"; "quaggy terrain"; "the
            sloughy edge of the pond"; "swampy bayous" [syn: {boggy},
             {marshy}, {miry}, {muddy}, {quaggy}, {sloughy}, {swampy}]
     2: dirty and messy; covered with mud or muck; "muddy boots"; "a
        mucky stable" [syn: {muddy}]
     [also: {muckiest}, {muckier}]