Source : Webster's Revised Unabridged Dictionary (1913)

Sliminess \Slim"i*ness\, n.
   The quality or state of being slimy.

Source : WordNet®

sliminess
     n 1: a property resembling or being covered with slime
     2: the quality of being disgusting to the senses or emotions
        [syn: {loathsomeness}, {repulsiveness}, {vileness}]