The Collaborative International Dictionary of English v.0.48:

Cussedness \Cuss"ed*ness\ (c[u^]s"[e^]d*n[e^]s), n. [Cussed (for
   cursed) + -ness.]
   Disposition to willful wrongdoing; malignity; perversity;
   cantankerousness; obstinacy. [Slang or Colloq., U. S.]
   [Webster 1913 Suppl.]

         In her opinion it was all pure "cussedness." --Mrs.
                                                  Humphry Ward.
   [Webster 1913 Suppl.]

         Disputatiousness and perversity (what the Americans
         call "cussedness").                      --James Bryce.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

cussedness
    n 1: meanspirited disagreeable contrariness [syn: cussedness,
         orneriness]

Moby Thesaurus II by Grady Ward, 1.0:

52 Moby Thesaurus words for "cussedness":
   bearishness, bitchiness, cantankerousness, churlishness,
   contrariness, crabbedness, crankiness, crossness, crustiness,
   devilment, devilry, deviltry, difficultness, disagreeability,
   dourness, evil intent, excitability, fractiousness, frowardness,
   harmfulness, hatefulness, huffiness, huffishness, iniquitousness,
   invidiousness, irascibility, irritability, maleficence, malice,
   malice aforethought, malice prepense, maliciousness, malignance,
   malignancy, malignity, meanness, nastiness, noxiousness,
   orneriness, perverseness, perversite, perversity, snappishness,
   stuffiness, sulkiness, sullenness, testiness, ugliness,
   waspishness, waywardness, wickedness, wrongheadedness