full of spite or malice; showing spite; malicious; malevolent; venomous: a spiteful child.

Is spitefulness a word?

1. A desire to harm others or to see others suffer: despitefulness, ill will, malevolence, malice, maliciousness, malignancy, malignity, meanness, nastiness, poisonousness, spite, venomousness, viciousness.

What's the meaning of Despitefully?

: expressing malice or hate.