'Slipperiness' definitions:

Definition of 'slipperiness'

From: WordNet
noun
A slippery smoothness; "he could feel the slickness of the tiller" [syn: slickness, slick, slipperiness, slip]
noun
The quality of being a slippery rascal [syn: rascality, shiftiness, slipperiness, trickiness]

Definition of 'Slipperiness'

From: GCIDE
  • Slipperiness \Slip"per*i*ness\, n. The quality of being slippery. [1913 Webster]