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From moment +‎ -ous.


  • (UK) IPA(key): /məʊˈmɛn.təs/
  • (US) IPA(key): /moʊˈmɛn.təs/
  • (file)
  • Rhymes: -ɛntəs


momentous (comparative more momentous, superlative most momentous)

  1. Outstanding in importance, of great consequence.
    • 1725, Daniel Defoe, Everybody's Business is Nobody's Business:
      The reason why I did not publish this book till the end of the last sessions of parliament was, because I did not care to interfere with more momentous affairs.
    • 1831, James Fenimore Cooper, Homeward Bound, ch. 31:
      "It has been a momentous month, and I hope we shall all retain healthful recollections of it as long as we live."
    • 1902, Joseph Conrad, The End of the Tether, ch. 3:
      What to the other parties was merely the sale of a ship was to him a momentous event involving a radically new view of existence.
    • 2007 July 1, Richard Dawkins, "Inferior Design," New York Times (retrieved 19 Nov 2013):
      Natural selection is arguably the most momentous idea ever to occur to a human mind, because it — alone as far as we know — explains the elegant illusion of design that pervades the living kingdoms and explains, in passing, us.

Derived terms[edit]