Malevolent

adjective/məˈlɛvələnt/character

Definition

Having evil intentions.

Etymology

From Middle English *malevolent (suggested by Middle English malevolence), from Old French malivolent and Latin malevolentem, from male (“badly, wrongly”) + volens (“willing, wishing”), from velle (“to wish”).

Synonyms

maleficent, malevolent, sinister

In a sentence

Malevolent actors probing the API for vulnerabilities.