: 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 MiltonSynonyms
Adjective
- astronomical
- astronomic
- Brobdingnagian
- bumper
- colossal
- cosmic
- cosmical
- cyclopean
- elephantine
- enormous
- galactic
- gargantuan
- giant
- gigantesque
- gigantic
- grand
- herculean
- heroic
- heroical
- Himalayan
- huge
- humongous
- humungous
- immense
- jumbo
- king-size
- king-sized
- leviathan
- mammoth
- massive
- mega
- mighty
- monster
- monstrous
- monumental
- mountainous
- oceanic
- pharaonic
- planetary
- prodigious
- super
- super-duper
- supersize
- supersized
- titanic
- tremendous
- vasty
- walloping
- whacking
- whopping
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
Joanne Shurvell, Forbes, 6 Jan. 2025
An image immediately came to mind: Frisch, Buck, and Boebert, all of them neighbors on the vast flatlands of Windsor.
—Peter Hessler, The New Yorker, 6 Jan. 2025
This would require a vast expansion of detention and court systems, as well as an unparalleled increase in law enforcement personnel, detention facilities, immigration courtrooms, and flight availability.
—Kevin Lynn, Newsweek, 6 Jan. 2025
Biden’s effort does not target areas that are major hubs for fossil fuel development — the vast majority of U.S. offshore oil and gas production comes from the central and western Gulf of Mexico, which is unaffected by Monday’s announcement.
—Rachel Frazin, The Hill, 6 Jan. 2025
See all Example Sentences for vast 
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Adjective
There’s a covered terrace, complete with an outdoor kitchen plus a second terrace, nestled amidst the woods and overlooking a vast clearing.
—Joanne Shurvell, Forbes, 6 Jan. 2025
An image immediately came to mind: Frisch, Buck, and Boebert, all of them neighbors on the vast flatlands of Windsor.
—Peter Hessler, The New Yorker, 6 Jan. 2025
This would require a vast expansion of detention and court systems, as well as an unparalleled increase in law enforcement personnel, detention facilities, immigration courtrooms, and flight availability.
—Kevin Lynn, Newsweek, 6 Jan. 2025
Biden’s effort does not target areas that are major hubs for fossil fuel development — the vast majority of U.S. offshore oil and gas production comes from the central and western Gulf of Mexico, which is unaffected by Monday’s announcement.
—Rachel Frazin, The Hill, 6 Jan. 2025
See all Example Sentences for vast
Dictionary Entries Near vast
Cite this Entry
“Vast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vast. Accessed 18 Jan. 2025.
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