Noun:

सहस्राब्दवादी,

millenarian's Usage Examples:

millenarian vision can be both romantic and intoxicating.

millenarian expectations in England in the 1650s: a Shropshire perspective.

millenarian cult, raised to the status of a world religion.

Their theology is strongly millenarian, centering in the hope of a world-wide theocracy with its seat at Jerusalem.

They kept both the Jewish Sabbath and the Christian Lord's day, and held extreme millenarian ideas in which Jerusalem figured as the centre of the coming Messianic kingdom.

Synonyms:

optimist, chiliast, millenarist,

Antonyms:

skeptic, doubter, negativist, pessimist,