The word "after-worlds" refers to the spiritual or supernatural realm beyond the physical world. Antonyms for this term may include words such as "physical world," "real world," "mundane world," or "earthly realm." These terms describe the material existence that we can perceive with our senses and experience in our everyday lives. They stand in contrast to the afterlife or spiritual reality that is often the subject of religious or supernatural belief systems. Other antonyms might include "temporary existence," "fleeting realm," or "ephemeral world," emphasizing the idea that the physical world is transitory and impermanent, in contrast to the idea of eternal life or a timeless afterlife.