VAST Synonyms: 123 Similar and Opposite Words

Q: How is the word 'vast' distinct from other similar adjectives?

Some common synonyms of vast are colossal , enormous , gigantic , huge , immense , and mammoth . While all these words mean "exceedingly large," vast usually suggests immensity of extent. // the vast Russian steppes

Q: When might 'colossal' be a better fit than 'vast'?

The words colossal and vast can be used in similar contexts, but colossal applies especially to a human creation of stupendous or incredible dimensions. // a colossal statue of Lincoln

Q: How do 'enormous' and 'immense' relate to one another, in the sense of 'vast'?

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

Q: Where would 'gigantic' be a reasonable alternative to 'vast'?

Although the words gigantic and vast have much in common, gigantic stresses the contrast with the size of others of the same kind. // a gigantic sports stadium

Q: When could 'huge' be used to replace 'vast'?

The synonyms huge and vast are sometimes interchangeable, but huge commonly suggests an immensity of bulk or amount. // incurred a huge debt

Q: When would 'mammoth' be a good substitute for 'vast'?

The meanings of mammoth and vast largely overlap; however, mammoth suggests both hugeness and ponderousness of bulk. // a mammoth boulder

vast

adjective

ˈvast

Definition of vast

as in huge

unusually large a vast expanse of land just waiting to be settled

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How is the word vast distinct from other similar adjectives?

Some common synonyms of vast are colossal, enormous, gigantic, huge, immense, and mammoth. While all these words mean "exceedingly large," vast usually suggests immensity of extent.

the vast Russian steppes

When might colossal be a better fit than vast?

The words colossal and vast can be used in similar contexts, but colossal applies especially to a human creation of stupendous or incredible dimensions.

a colossal statue of Lincoln

How do enormous and immense relate to one another, in the sense of vast?

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

Where would gigantic be a reasonable alternative to vast?

Although the words gigantic and vast have much in common, gigantic stresses the contrast with the size of others of the same kind.

a gigantic sports stadium

When could huge be used to replace vast?

The synonyms huge and vast are sometimes interchangeable, but huge commonly suggests an immensity of bulk or amount.

incurred a huge debt

When would mammoth be a good substitute for vast?

The meanings of mammoth and vast largely overlap; however, mammoth suggests both hugeness and ponderousness of bulk.

a mammoth boulder

Example Sentences

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.

Recent Examples of vast But about 100,000 people are awaiting a transplant, the vast majority of whom need a kidney. — ABC News, 20 Oct. 2026 Disqualifying both lists would have deprived the vast majority of Palestinian voters of their preferred political representation. — Tamir Sorek, The Conversation, 20 Oct. 2026 By leveraging its immense manufacturing scale and a vast network of local bike shop partners across the US, the company works with margins that smaller startups couldn’t survive with. — New Atlas, 19 Oct. 2026 The highlight was a cluster of rough diamonds, some of them glowing fluorescent blue, a color straight from Earth’s vast palette. — Samantha Conti, Footwear News, 19 Oct. 2026 See All Example Sentences for vast

Recent Examples of Synonyms for vast

Adjective

Tre Tyus called up from practice squad, the big punt block at the end was huge, and the guys came together and found a way to win.

— Charlotte Observer, Charlotte Observer, 18 Oct. 2026
Video also appears to show a drone striking a huge bridge in the city.

— ABC News, ABC News, 18 Oct. 2026

Definition of huge

Adjective

With the enormous distractions and investments in college sports now removed, our institutions of higher learning can focus on their only mission, and that is providing the best, most affordable education on earth for our young people.

— Bruce Svare, Sportico.com, 17 Oct. 2026
Its nuclear reactor gives it enormous endurance without needing to surface or snorkel to operate diesel engines.

— Christopher McFadden, Interesting Engineering, 17 Oct. 2026

Definition of enormous

Adjective

The fair had been paying about $1 million a year for the gigantic space, which has hosted nearly 300 galleries in some editions.

— Brian Boucher, ARTnews.com, 19 Oct. 2026
On Friday, that thought process took another gigantic step, as those in charge of putting a product on television have all but signed the official paperwork to once again expand the college football playoff.

— Trey Wallace OutKick, FOXNews.com, 17 Oct. 2026

Definition of gigantic

Adjective

Toronto reacquired Leonard in an offseason trade after a salary cap-circumvention scandal that led to massive sanctions against the Clippers.

— CBS News, CBS News, 22 Oct. 2026
Pearson and his brother KeShaun are the two most prominent local opponents of Elon Musk’s xAI, a subsidiary of which has developed a massive data-center complex, provocatively named Colossus, in and around South Memphis.

— Keeanga-Yamahtta Taylor, New Yorker, 22 Oct. 2026

Definition of massive

Adjective

By leveraging its immense manufacturing scale and a vast network of local bike shop partners across the US, the company works with margins that smaller startups couldn’t survive with.

— New Atlas, New Atlas, 19 Oct. 2026
On the Mediterranean side, Playa de Santa Bárbara is a wide sandy beach north of the border, with the immense Rock of Gibraltar rising to the south — a potentially spectacular foreground.

— Jamie Carter, Space.com, 18 Oct. 2026

Definition of immense

Adjective

Among the companies that pursued a traditional IPO, only Circle is trading close to its listing price—and that’s primarily thanks to the colossal opening day pop the company enjoyed back in June of 2025.

— Jeff John Roberts, Fortune, 19 Oct. 2026
Concrete, when poured over rods of steel, proved strong enough to prop up colossal skyscrapers that Julius Caesar could only have dreamed of.

— Sara Herschander, Vox, 15 Oct. 2026

Definition of colossal

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varying

vast

vastitude

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“Vast.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vast. Accessed 25 Oct. 2026.

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Synonyms of vast

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