momentous
[moh-men-tuh s]
- of great or far-reaching importance or consequence: a momentous day.
Origin of momentous
Synonyms
See more synonyms on Thesaurus.comvital, critical, crucial, serious. See heavy.
Antonyms
trivial, trifling.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for momentous
Contemporary Examples
He returned when she took on the Abner Louima case, which was as momentous in 1999 as the Michael Brown case in Ferguson is now.
It was, of course, a momentous book, in our memory and in its own time.
Thirty years ago this week, Ronald Reagan made perhaps the most momentous decision of his presidency.
Yet a screaming headline on the Drudge Report—SHARPTON WAS FBI MOB RAT—was hardly an auspicious way to begin a momentous week.
It seems amazing that in 2014 that this should be so momentous.
Norm Lewis, Broadway’s First Black ‘Phantom,’ on Racism, Heroes, and Dream RolesTim Teeman
March 21, 2014
Historical Examples
Those that confront us now are as momentous as any in the past.
It is the evening of Sedan, the most momentous victory of the century.
Camps, Quarters and Casual PlacesArchibald Forbes
The night came, the last night but one of that eventful, momentous year 1775.
In the ValleyHarold Frederic
But this is rambling far from the momentous twenty-first of June, my day of triumph.
The Fortune HunterLouis Joseph Vance
How can I be, when I think of the momentous change that awaits me, and of all I have to leave?
The Tenant of Wildfell HallAnne Bronte
momentous
- of great significance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for momentous
Online Etymology Dictionary, © 2010 Douglas Harper