Definition of malevolent:

having or exerting a malignant influence

Synonyms of malevolent:

evil, malefic, malign, malicious, spiteful, hateful, malignant, cruel, wicked, mean, vicious, sinister

Opposite/Antonyms of malevolent:

kind, benevolent, charitable, kindhearted, good, amiable, compassionate, sympathetic, cushionhearted

Sentence/Example of malevolent:

That evil is malevolent violence, a curse that is the bane of our human existence.