Read the excerpt from The Inheritors. EMIL: Guess you don't know much about the Espionage Act or you'd go and make a little friendly call on your uncle. When your case comes to trial—and Judge Lenon may be on the bench—(whistles) He's one fiend for Americanism. What best describes the effect of the word fiend in this excerpt?

It characterizes Judge Lenon as a corrupt judge who cares more about patriotism than he cares about justice.

Explanation:

a fiend can simply be said to be an individual who hold on to their believes, points and do not waiver in their integrity or truth about what they believe in. they are  enthusiast, believers, devotee of a particular thing, idea, e.t.c.