Daeva is an ancient Persian term originally used to refer to malevolent supernatural beings. However, throughout history, the word has evolved to have multiple synonyms. In the Zoroastrian religion, a daeva is a demon or wicked spirit, and the term is often used interchangeably with the word "deva." In Hinduism, the daeva is known as a "demon," while in Buddhism, it is referred to as "asura." In modern-day society, the term daeva can also be used as a synonym for devil, daemon, or demon. The word's meaning has changed over time and across different cultures, but its association with evil remains consistent.