The phrase "acme of evil" refers to the very highest state or pinnacle of wickedness or depravity. Synonyms for this term include apex of malice, height of immorality, summit of malevolence, peak of sinfulness, pinnacle of depravity and climax of wickedness. Other similar terms include summit of evil, zenith of corruption, epitome of vice and height of atrocity. These phrases all describe the extreme and most severe form of evil, which surpasses all conventional definitions of immorality or unethical behavior. Such synonyms are used to emphasize the gravity and severity of the evil behavior or actions being described, while also showcasing the skill of the writer's linguistic abilities.