vindictive

(s) 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,
(s) 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,

revengeful vengeful despiteful spiteful

vindictively vindictiveness