IPA: /ˈiːvɪlər/
KK: /ˈivələr/
More wicked or morally wrong than something else.
In the story, the eviler character plotted against the hero.
Eviler → This word is formed from "evil" (from Old English "yfel", meaning bad or wicked) and the comparative suffix "-er" (meaning more). The word "eviler" means more evil or worse than something else.
Think of the word 'evil' which means bad, and remember that 'eviler' means more bad or worse.