spiteful
A chimp study suggests spitefulness is a uniquely human trait.
The love and respect my mother held for my father turned now to hatred and spitefulness.
Dad left us when I was seven because he couldn't take any more of her shouting and spitefulness.
In Agamemnon, we see a case of revenge that is primarily driven by anger and spitefulness.
This is a political spitefulness of incredible proportions.

SMART Vocabulary: related words and phrases

Unkind, cruel & unfeeling
acerbic
acerbically
acerbity
acidly
anti-cruelty
cold-heartedly
cruel
cruelly
cruelty
cruelty to someone/something
meanly
meanness
mental cruelty
merciless
mercilessly
trenchant
trenchantly
uncharitable
uncharitably
unchristian