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Synonyms

vast

American  
[vast] / væst /

adjective

  • vaster,
    comparative
  • vastest
    superlative
  1. of very great area or extent; immense.

    the vast reaches of outer space.

    Synonyms:
    stupendous, colossal, gigantic, boundless, measureless
    Antonyms:
    small
  2. of very great size or proportions; huge; enormous.

    vast piles of rubble left in the wake of the war.

  3. very great in number, quantity, amount, etc..

    vast sums of money.

  4. very great in degree, intensity, etc..

    an artisan of vast skill.


noun

  1. Literary. an immense or boundless expanse or space.

vast British  
/ vɑːst /

adjective

  1. unusually large in size, extent, degree, or number; immense

  2. (prenominal) (intensifier)

    in vast haste

"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

noun

  1. poetic immense or boundless space

  2. dialect a very great amount or number

"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

Other Word Forms

Derived Forms

Inflected Forms

Adjectives

Etymology

Origin of vast

First recorded in 1565–75, from Latin vastus “empty, immense”

Explanation

If you’re in a boat out on the water and you can’t see any land, then the body of water you’re in is probably vast, or enormous. Things that are described as vast include oceans, seas, the heavens, deserts, and the surface of the moon. Even places that can't be seen or touched, like imaginations, are called vast, because of the endless ideas that come out of them. Someone with a vast imagination is very creative, and a place with a vast landscape is very large. Possibilities are vast, and so are the vocabularies of the world, filling vast volumes.

Keep Reading on Vocabulary.com

Vocabulary lists containing vast

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

U.S. officials say Hengli is one of the biggest players in a vast ecosystem of “teapot” refineries in China that for years have been buying sanctioned oil.

From The Wall Street Journal Aug. 16, 2026

"Confidence and reciprocity are beginning to take shape to open the door to engagement on the most difficult issues," says Gagnon whom we meet inside the UN's vast, heavily fortified compound.

From BBC Aug. 14, 2026

Now, the streaming giant wants to make it easier for viewers to find them on its vast and eclectic platform.

From Los Angeles Times Aug. 14, 2026

The Atlantic Meridional Overturning Circulation, or AMOC, is a vast network of ocean currents that carries warm water northward from the tropics.

From Science Daily Aug. 14, 2026

He stood at their very roots: craning his neck at vast, swooping ice-faces, at black peaks that pierced the clouds.

From "Wolf Brother" by Michelle Paver

The lands whose governance was at stake are vaster than any nation, and it’s possible the consequences of the vote will be felt for eons.

From Salon Aug. 19, 2024

But scientists like Philip Riris have taken a broader approach, looking for enduring patterns of human behavior on a vaster scale of time and space.

From New York Times May 1, 2024

And while disposing treated water in the ocean is common practice for nuclear plants, critics have pointed out that the amount being released from Fukushima is on an unprecedented, far vaster scale.

From BBC Aug. 24, 2023

The temple/palace system in Egypt therefore operated on a much vaster scale than anywhere in Mesopotamia.

From Textbooks Apr. 19, 2023

This finding alone would have ensured Hubble’s reputation, but he now turned to the question of working out just how much vaster the universe was, and made an even more striking discovery.

From "A Short History of Nearly Everything" by Bill Bryson

“Your handshake came over the vastest ocean in the world,” Zhou told Nixon as they rode to the guest quarters that Tuesday.

From Washington Post Feb. 20, 2022

Baggage handling should be neither seen nor heard, though it’s the vastest operation of all.

From The New Yorker Feb. 1, 2016

Everyone’s strings are being pulled by someone, with, as Voltaire wrote, silence being “the verdict of the vastest mind.”

From New York Times Oct. 26, 2010

Today, Ober owns several stores in a South Coast Plaza that is the vastest and most prosperous of all of Orange County’s many temples of shopping.

From Los Angeles Times Jun. 17, 1990

Now Odin and his sons took the body of Ymir—the vastest body that ever was—and they flung it into the Chasm of Chasms, filling up all the hollow places with it.

From The Children of Odin The Book of Northern Myths by Willy Pogany

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