end of the world noun 4end-of-the-world adjective 1forms 1 noun4 •The death and destruction of life on Earth, especially human. •The destruction of Earth. •Any change that seems catastrophic or devastating.You make it sound as though moving house is the end of the world. •Synonym of ends of the earth (“a faraway place”) end-of-the-world adjective1 •Of or pertaining to the end of the world or the end times.Intriguing (and extremely good-looking) end-of-the-world saga; not entirely successful but well worth a look. — 1992 formsends of the world