Doomsday – The last day of the world's existence

(Pronounced dooms-day)

To remember the definition of the word doomsday, use the following mnemonic:

Doom's coming for us all today (doomsday); this is the last day for the world's existence.

Examples of doomsday in a sentence

Although it's unlikely to happen in my lifetime, I have a fear of doomsday.

People were talking about a doomsday scenario which they say will happen next year.

A plague was one of the early prophesies of doomsday.