Elfen Lied is a popular anime series that tells the story of a genetically modified species called Diclonius, who possess powerful telekinetic and psychokinetic abilities. While there are no direct synonyms for the term 'Elfen Lied,' there are a few words that can be associated with it. The show is often described as dark, gory, and unsettling due to its graphic violence and mature themes. Similarly, the terms 'psychological thriller' and 'horror' can also be used to describe the series. Overall, Elfen Lied is a unique and thought-provoking show that challenges its viewers with complex moral dilemmas and explores the darker aspects of humanity.