What is the scariest thing in the world?

The scariest thing in the world can vary from person to person as fear is often subjective. However, some universally terrifying concepts or phenomena that many people find frightening include death, the unknown, natural disasters, supernatural entities, and existential dread. Fear of the unknown and uncertainty about the future can also be highly unsettling for many individuals. Additionally, horror movies, urban legends, and folklore often tap into common fears to provoke feelings of terror in audiences. Ultimately, what is considered the scariest thing in the world can be highly personal and influenced by individual experiences, beliefs, and perspectives.