vindictive
definitions on the web:- revengeful: disposed to seek revenge or intended for revenge; «more vindictive than jealous love» ~ attrib. to shakespeare; «punishments...essentially vindictive in their nature» ~m.r. cohen
despiteful: 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».
source: cogsci.princeton via google define:.
