IPA: /ˈiːvɪlɪst/
KK: /ˈivəlɪst/
The most morally bad or wicked; having a very harmful or malevolent nature.
In the story, the evilest character plotted to take over the kingdom.
Comparative: more evil
Superlative: evilest
Evilest → It is formed from "evil" (from Old English *yfel*, meaning morally bad or wicked) and the superlative suffix "-est" (meaning most). The word "evilest" means the most morally bad or wicked.
Think of the word 'evil' which means morally bad, and remember that 'evilest' refers to the most extreme form of that badness.