Source : Webster's Revised Unabridged Dictionary (1913)

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.

Source : WordNet®

spiteful
     adj : showing malicious ill will and a desire to hurt; motivated
           by spite; "a despiteful fiend"; "a truly spiteful
           child"; "a vindictive man will look for occasions for
           resentment" [syn: {despiteful}, {vindictive}]