: very great in size, amount, degree, intensity, or especially in extent or range
vast knowledge
a vast expanse
: a boundless space
the vast of heaven—
John Milton
John MiltonExamples 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
Ray Sanchez, CNN Money, 2 Nov. 2025
Here, a vast expanse of rolling white dunes embraces thousands of shimmering turquoise and emerald freshwater lagoons, sculpted by seasonal rains.
—Lily Bunker, Travel + Leisure, 2 Nov. 2025
Lottery players in West Virginia can choose from popular national games like the Powerball and Mega Millions, which are available in the vast majority of states.
—Jay Cannon, USA Today, 1 Nov. 2025
Target’s bedding section is vast, but its beloved in-house Threshold line deserves a closer look.
—Mariana Best, Better Homes & Gardens, 31 Oct. 2025
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Adjective
Prosecutors accused Farzam of using an alias to fraudulently access the California Law Enforcement Telecommunications System, a vast computer network that connects state public safety agencies to databases for criminal histories, vehicle and driver records and other sensitive information.
—Ray Sanchez, CNN Money, 2 Nov. 2025
Here, a vast expanse of rolling white dunes embraces thousands of shimmering turquoise and emerald freshwater lagoons, sculpted by seasonal rains.
—Lily Bunker, Travel + Leisure, 2 Nov. 2025
Lottery players in West Virginia can choose from popular national games like the Powerball and Mega Millions, which are available in the vast majority of states.
—Jay Cannon, USA Today, 1 Nov. 2025
Target’s bedding section is vast, but its beloved in-house Threshold line deserves a closer look.
—Mariana Best, Better Homes & Gardens, 31 Oct. 2025
See All Example Sentences for vast
Cite this Entry
“Vast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vast. Accessed 4 Nov. 2025.
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