How to say "apocalypse" in Japanese

• アポカリプス
  nounThe loanword rendering of 'apocalypse', less common than 世紀末; it keeps the sound of the English word and is seldom the natural choice for talking about the end of the world.
• 世紀末せいきまつCommon
  nounThe common word for the end of the world, especially in fiction; literally 'end of the century', it is the usual way to describe an apocalyptic world or scenario.

For the end of the world, especially in fiction, 世紀末 is the common choice; 「アポカリプス」 is the less common loanword, kept for the English term's own flavor.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• アポカリプスapocalypse
• 世紀末せいきまつend of the world (esp. in fiction)