slippy

from WordNet (r) 3.0 (2006)

slippy
    adj 1: causing or tending to cause things to slip or slide;
           "slippery sidewalks"; "a slippery bar of soap"; "the
           streets are still slippy from the rain" [syn: {slippery},
           {slippy}] [ant: {nonslippery}]

from The Collaborative International Dictionary of English v.0.48

Slippy \Slip"py\, a. [AS. slipeg.]
   Slippery.
   [1913 Webster]