Malicious
Part of speech: adjective
Definition: Of, pertaining to, or as a result of malice or spite Deliberately harmful; spiteful
Example sentence: If someone feels they're being maliciously treated, then they should sue for libel. And if someone is malicious, if they are reckless, they will have no defence in law at all.
Despiteful
Part of speech: adjective
Definition: Full of despite.Expressing malice or contemptuous hate.