shadiness

from WordNet (r) 3.0 (2006)

shadiness
    n 1: relative darkness caused by light rays being intercepted by
         an opaque body; "it is much cooler in the shade"; "there's
         too much shadiness to take good photographs" [syn: {shade},
         {shadiness}, {shadowiness}]
    2: of questionable honesty or legality; "they acted with such
       obvious shadiness that they were instantly recognizable";
       "the shadiness of their transactions"

from The Collaborative International Dictionary of English v.0.48

Shadiness \Shad"i*ness\, n.
   Quality or state of being shady.
   [1913 Webster]