Try Our Apps


Supposedly vs. Supposably


[moh-men-tuh s] /moʊˈmɛn təs/
of great or far-reaching importance or consequence:
a momentous day.
Origin of momentous
1645-55; moment + -ous
Related forms
momentously, adverb
momentousness, noun
unmomentous, adjective
unmomentously, adverb
unmomentousness, noun
vital, critical, crucial, serious. See heavy.
trivial, trifling. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for momentousness
Historical Examples
  • The very wetness of the air impregnated all it touched with the momentousness of the hour.

  • As I waited the coming of my most powerful customer, I could not keep my mind off the momentousness of the interview before me.

    Frenzied Finance Thomas W. Lawson
  • He seemed overwhelmed at the momentousness of the act which he was about to perform.

  • Yes, she had been blindly selfish, and had failed to realize the momentousness of the great questions of the day.

    The Liberty Girl Rena I. Halsey
  • Apart from the splendour of her social position and the momentousness of her political one, she was a person of great wealth.

    Queen Victoria Lytton Strachey
  • Wade felt the momentousness of that query, but it seemed her face had been telltale enough, without confirmation of words.

  • Only the irrepressible Tubby was not duly impressed with the momentousness of the occasion.

    The Boy Scouts' Mountain Camp John Henry Goldfrap
  • They had gone to sleep bubbling over with the momentousness of the coming day, and now that day had opened.

  • It was now that the momentousness of the question I was about to decide rushed with its genuine force upon my apprehension.

    Edgar Huntley Charles Brockden Brown
British Dictionary definitions for momentousness


of great significance
Derived Forms
momentously, adverb
momentousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for momentousness



1650s, from moment + -ous to carry the sense of "important" while momentary kept the meaning "of an instant of time." Related: Momentously; momentousness.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for momentous

Many English speakers likely know this word

Word Value for momentousness

Scrabble Words With Friends

Nearby words for momentousness