The Collaborative International Dictionary of English v.0.48:

Soapy \Soap"y\, a. [Compar. Soapier; superl. Soapiest.]
   1. Resembling soap; having the qualities of, or feeling like,
      soap; soft and smooth.
      [1913 Webster]

   2. Smeared with soap; covered with soap.
      [1913 Webster]