'Spitefulness' definitions:

Definition of 'spitefulness'

From: WordNet
noun
Feeling a need to see others suffer [syn: malice, maliciousness, spite, spitefulness, venom]
noun
Malevolence by virtue of being malicious or spiteful or nasty [syn: cattiness, bitchiness, spite, spitefulness, nastiness]

Definition of 'Spitefulness'

From: GCIDE
  • Spiteful \Spite"ful\, a. Filled with, or showing, spite; having a desire to vex, annoy, or injure; malignant; malicious; as, a spiteful person or act. --Shak. -- {Spite"ful*ly}, adv. {Spite"ful*ness}, n. [1913 Webster]