"vindictive" in the adjective sense
1. revengeful, vindictive, vengeful
disposed to seek revenge or intended for revenge
"more vindictive than jealous love"- Shakespeare
"punishments...essentially vindictive in their nature"- M.R.Cohen
2. despiteful, spiteful, vindictive
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: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License