vindictive

adjectives

disposed to seek revenge or intended for revenge
"more vindictive than jealous love"- Shakespeare; "punishments...essentially vindictive in their nature"- M.R.Cohen
revengeful, vengeful, vindictive
is derived from
vindictiveness
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"
despiteful, spiteful, vindictive
is derived from
vindictiveness