Source : Webster's Revised Unabridged Dictionary (1913)

Bedevilment \Be*dev"il*ment\, n.
   The state of being bedeviled; bewildering confusion;
   vexatious trouble. [Colloq.]

Source : WordNet®

bedevilment
     n : the act of harassing someone [syn: {badgering}, {worrying},
         {torment}]