Momentous describes an important event or moment in time. It is used for a time of great consequence or for a major accomplishment, and is almost always reserved for good things. The day Barack Obama was elected president was a momentous day for America.

  • Pronunciation: /məuˈmentəs/
  • English Description: a momentous event, change, or decision is very important because it will have a great influence on the future
  • Chinese Translation: 重大的 (Zhong4 Da4 De)
  • Spanish Translation: trascendental
  • STORY: When a moment is so great you know you'll never forget it, you have just experienced something momentous. It can be personal — perhaps the day you were named prom queen; or something historic — like the day Elizabeth was named Queen of England. Momentous and momentary share the root word moment but momentary describes just one fleeting moment in time. A momentary occurrence can certainly be momentous, but it's not always the case.


  • These appointments were momentous enough, but they have now been followed by yet more startling changes.BBCApr 29, 2015

  • It is a strange thing to see the writing of small children—and a half-dozen adolescents—on a momentous legal document.

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