slipperiness
  滑,滑頭
  Slip·per·i·ness, n. The quality of being slippery.
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  slipperiness
       n 1: a slippery smoothness; "he could feel the slickness of the
            tiller" [syn: slickness, slick, slip]
       2: the quality of being a slippery rascal [syn: rascality, shiftiness,
           trickiness]