A person who believes in the coming of a major transformation of society, after which all things will be changed, often associated with the end of the world or a new era.
The millenarian preached about the imminent arrival of a utopian age.
millenarianadjective
Relating to or believing in a future thousand-year age of blessedness, typically associated with the second coming of Christ.
The millenarian beliefs of the group led them to prepare for an imminent transformation of the world.
Pertaining to a period of a thousand years.
The millenarian celebrations marked the city's thousand-year anniversary.