The Collaborative International Dictionary of English v.0.48:

Greasiness \Greas"i*ness\, n.
   The quality or state of being greasy, oiliness; unctuousness;
   grossness.
   [1913 Webster]

WordNet (r) 3.0 (2006):

greasiness
    n 1: consisting of or covered with oil [syn: greasiness,
         oiliness, oleaginousness]

Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "greasiness":
   downiness, evenness, fatness, fattiness, flatness,
   frictionlessness, glabriety, glabrousness, glossiness, levelness,
   lubricity, oiliness, pinguidity, regularity, richness,
   saponaceousness, saponacity, satininess, sebaceousness, silkiness,
   sleekness, slickness, slipperiness, smoothness, soapiness, suavity,
   unctuousness, uniformity, velvetiness