nastiness

from WordNet (r) 3.0 (2006)

nastiness
    n 1: a state characterized by foul or disgusting dirt and refuse
         [syn: {filth}, {filthiness}, {foulness}, {nastiness}]
    2: malevolence by virtue of being malicious or spiteful or nasty
       [syn: {cattiness}, {bitchiness}, {spite}, {spitefulness},
       {nastiness}]
    3: the quality of being unpleasant; "I flinched at the nastiness
       of his wound" [ant: {niceness}]

from The Collaborative International Dictionary of English v.0.48

Nastiness \Nas"ti*ness\, n.
   The quality or state of being nasty; extreme filthness;
   dirtiness; also, indecency; obscenity.
   [1913 Webster]

         The nastiness of Plautus and Aristophanes. --Dryden.
   [1913 Webster]