vast

1 of 2

adjective

: very great in size, amount, degree, intensity, or especially in extent or range
vast knowledge
a vast expanse
vastness noun

vast

2 of 2

noun

: a boundless space
the vast of heavenJohn Milton
Choose the Right Synonym for vast

enormous, immense, huge, vast, gigantic, colossal, mammoth mean exceedingly large.

enormous and immense both suggest an exceeding of all ordinary bounds in size or amount or degree, but enormous often adds an implication of abnormality or monstrousness.

an enormous expense
an immense shopping mall

huge commonly suggests an immensity of bulk or amount.

incurred a huge debt

vast usually suggests immensity of extent.

the vast Russian steppes

gigantic stresses the contrast with the size of others of the same kind.

a gigantic sports stadium

colossal applies especially to a human creation of stupendous or incredible dimensions.

a colossal statue of Lincoln

mammoth suggests both hugeness and ponderousness of bulk.

a mammoth boulder

Examples of vast in a Sentence

Adjective She has a vast amount of knowledge on this subject. The policy is supported by the vast majority of citizens. a vast expanse of land
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
With a double harbor set at the tip of a long and sinewy peninsula on a highly strategic coastline, Knidos grew rich from its favorable natural position and from trading wine, olive oil and vast quantities of amphorae. Rebecca Ann Hughes, Forbes.com, 5 July 2025 Police pointed out that the vast majority of deaths at the time occurred after the park’s closing time and encouraged community members to be mindful of local rules. Julia Bonavita, FOXNews.com, 5 July 2025 The vast majority of people who received a one-time financial gift to stave off homelessness were still housed several months after the aid ended. Blake Nelson, San Diego Union-Tribune, 5 July 2025 And the company behind the bet was Google, which had acquired legacy phone maker Motorola Mobility and was leveraging its modern tech prowess and vast resources to make the Moto X smartphone a success. Verne Kopytoff, Fortune, 5 July 2025 See All Example Sentences for vast

Word History

Etymology

Adjective

borrowed from Latin vāstus or vastus "devoid of habitation, desolate, dreary," also, "of great size, immense," probably in part continuing Indo-European *h1u̯eh2-sto- (whence Old High German wuosti "empty, deserted," Old English wēste, Old Irish fás), in part conflated with another base *wast- of uncertain origin

Noun

noun derivative of vast entry 1, perhaps by analogy with deep entry 1, deep entry 3

First Known Use

Adjective

1585, in the meaning defined above

Noun

1604, in the meaning defined above

Time Traveler
The first known use of vast was in 1585

Browse Nearby Words

Cite this Entry

“Vast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vast. Accessed 8 Jul. 2025.

Kids Definition

vast

adjective
ˈvast
: very great in extent, size, amount, degree, or intensity
a vast stretch of desert
vast knowledge
vastly adverb
vastness
ˈvas(t)-nəs
noun

More from Merriam-Webster on vast

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