The term 'evil one' is used to refer to a variety of malevolent supernatural beings. The crossword solutions for this term include 'DEVIL' (5 letters), 'SATAN' (5 letters), 'DEMON' (5 letters), 'OGRE' (4 letters), and 'FIEND' (5 letters). The DEVIL, also known as SATAN, is a figure in Christianity and other Abrahamic religions who tempts humans to sin and is often seen as the embodiment of evil. Demons are supernatural creatures found in many religions and mythologies that are usually associated with chaos and destruction. Ogres are large, monstrous humanoid creatures found in folklore and literature, often depicted as cruel and violent. Finally, fiends are malevolent supernatural beings, often associated with the DEVIL or demons, that are capable of causing harm to humans.