Fun with the language...................

Unctuous      Adjective      (ˈəŋ(k)-chə-wəs)

1. a)  of, like, or characteristic of an ointment or unguent; oily 
          or greasy        b)  made up of or containing fat and oil

2.  like oil, soap, or grease to the touch;  said of certain minerals

3.  soft and rich; said of soil

4.  plastic, moldable

5.  characterized by a smug, smooth pretense of spiritual feeling,
      fervor, or earnestness, as in seeking to persuade;  too suave
     or oily in speech or manner.

unctuousity or unctuousness    n.
unctuously      adv.