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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.

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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.

In a nation that doesn't care much for soccer, vast crowds sang the cheesy, sunny song "Country Roads" to motivate their heroes.

From Barron's • Jul. 7, 2026

The vast majority of accused parents will be vindicated, but only after a stressful, unjustified process.

From Slate • Jul. 7, 2026

Russian financial assets are, for the vast majority of international investors, prohibited from a legal standpoint and impossible from an operational perspective.

From MarketWatch • Jul. 7, 2026

The vast majority of the interview was broadcast, but a small amount of material was not included because of time constraints.

From BBC • Jul. 6, 2026

He sat back in his chair, smiling apologetically from across the vast reaches of his desk.

From "Found" by Margaret Peterson Haddix

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