mo·​men·​tous | \ mō-ˈmen-təs How to pronounce momentous (audio) , mə- \

Definition of momentous

: having great or lasting importance : consequential, significant a momentous decision a momentous event/occasion The Senate begins a momentous debate on health care today …The New York Times Deydey usually talked about his travels, the places he'd seen and the people, the close calls and momentous encounters with animals, weather, other Anishinabeg, and best of all, ghosts.— Louise Erdrich The late nineteenth century was strewn with inventions. Many were momentous, but few affected men and women more closely than the bicycle and its motorized offspring: motorcycle, motor-car and aeroplane.— Eugen Weber

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Other Words from momentous

momentously adverb
a momentously important decision … a … twist that is executed differently from the comic book story, but is just as dramatically and momentously presented. The Philippines Daily Inquirer
momentousness noun
But other East Europeans had little time to marvel at the momentousness of the moment. Just one day after the fall of the [Berlin] Wall, Bulgaria's dour leader of 35 years, Todor Zhivkov, was ousted. — Stephen E. Deane

Examples of momentous in a Sentence

My college graduation was a momentous day in my life. a momentous occasion that will go down in the history books
Recent Examples on the Web But the historic vote on the landmark legislation -- which if put into law would be momentous for the emerging multibillion-dollar cannabis industry and broader social justice movements -- ultimately is largely symbolic. Alicia Wallace, CNN, "House passes landmark cannabis bill, but legal weed isn't around the corner," 4 Dec. 2020 New episodes cover momentous events in the family's history, including Princess Diana's tumultuous relationship with Prince Charles, and Margaret Thatcher's ascension to becoming the first female Prime Minister. Amy Mackelden, Harper's BAZAAR, "The Crown Season 4 Has Twitter in a Glass Case of Emotion," 15 Nov. 2020 The halls of Congress are familiar to Kelly, who spent time there with his wife advocating for stricter gun laws and appeared alongside her during momentous events, such as then-President Barack Obama’s State of the Union speech. Yvonne Wingett Sanchez, The Arizona Republic, "Sen.-elect Mark Kelly's transition to the US Senate will happen quickly," 4 Nov. 2020 To celebrate the momentous occasion, here's a countdown of the 10 greatest NFL players to ever come from (current) MAC schools. Jim Reineking, USA TODAY, "#MACtion returns Wednesday! Here are the greatest NFL players to come from MAC schools.," 4 Nov. 2020 The Empire alum returns to network television later this month to host the 2020 American Music Awards for the first time, for what will be a momentous occasion. Kimberly Wilson, Essence, "Taraji P. Henson Set To Host The 2020 American Music Awards," 2 Nov. 2020 But these laws were a momentous achievement nonetheless. Alice Baumgartner, The New Yorker, "When the Enslaved Went South," 19 Nov. 2020 Those same betting odds forecasted that Biden would win the election with 310 electoral college votes, according to US-Bookies, despite some polls predicting a momentous landslide that would have given Biden as many as 350 electoral votes. Rey Mashayekhi, Fortune, "Betting markets called the presidential election more accurately than polls," 19 Nov. 2020 As baseballs traveled through the fog, wind and other challenging China Basin elements, something momentous happened to the perception of Oracle Park during the Giants’ 2020 season. John Shea,, "Hitters express interest in playing for Giants: ‘the tide has turned’," 19 Nov. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'momentous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of momentous

1631, in the meaning defined above

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Time Traveler for momentous

Time Traveler

The first known use of momentous was in 1631

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Statistics for momentous

Last Updated

31 Dec 2020

Cite this Entry

“Momentous.” Dictionary, Merriam-Webster, Accessed 20 Jan. 2021.

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More Definitions for momentous


How to pronounce momentous (audio)

English Language Learners Definition of momentous

: very important : having great or lasting importance


mo·​men·​tous | \ mō-ˈmen-təs How to pronounce momentous (audio) \

Kids Definition of momentous

: very important a momentous decision

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