Learn how to say Apocalyptic correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word apocalyptic:
describing or prophesying the complete destruction of the world:
the apocalyptic visions of ecologists
momentous or catastrophic:
the struggle between the two countries is assuming apocalyptic proportions
of or resembling the biblical Apocalypse:
early 17th century (as a noun denoting the writer of the Apocalypse, St John): from Greek apokaluptikos, from apokaluptein ‘uncover’ (see apocalypse)