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

Synonyms & Similar Words

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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 Indeed, the trillion-dollar Belt & Road Initiative is in large part a defensive maneuver, born of a desire to reduce China’s susceptibility to maritime threats from the US by looking inland to the vast Eurasia continent. — Andy Browne, semafor.com, 6 Oct. 2026 Each petal serves both structural and aesthetic purposes, enclosing a vast central hall that can accommodate up to 2,500 worshippers. — Kieron Marchese, Architectural Digest, 6 Oct. 2026 By the end of Monday night, Caesars Superdome had largely emptied, and the vast majority of remaining seats were filled with fans donning red. — Daniel Flick, AJC.com, 6 Oct. 2026 The rugged peaks of Afghanistan’s section of this vast mountain range act as water towers. — Laura Paddison, CNN Money, 6 Oct. 2026 See All Example Sentences for vast

Recent Examples of Synonyms for vast

Adjective

Thorton had the first two-touchdown game of his career and made the huge catch to set up the go-ahead touchdown before the injury.

— Blair Kerkhoff, Kansas City Star, 5 Oct. 2026
This deprived the treasurers of huge assets that otherwise could have been invested to generate billions of dollars for the pensions — a gap present-day taxpayers must fill.

— Keith M. Phaneuf, Hartford Courant, 4 Oct. 2026

Definition of huge

Adjective

That creates an enormous range of possible eclipse trips, from the Mediterranean coast and the mountains of southern Spain to historic cities, archaeological sites and desert landscapes across North Africa.

— Jamie Carter, Space.com, 3 Oct. 2026
PewDiePie argues that users do not necessarily need an enormous model for everyday agentic tasks.

— Kaif Shaikh, Interesting Engineering, 3 Oct. 2026

Definition of enormous

Adjective

Both execs are well-liked and respected, and both boast tremendous domains, consisting of both studios and networks.

— Michael Schneider, Variety, 2 Oct. 2026
Diamonds are crystallized under tremendous pressure and heat deep inside the Earth and then thrust to the surface through volcanic activity before they’re scattered by water or wind.

— LAURA TURBAY, ABC News, 2 Oct. 2026

Definition of tremendous

Adjective

On Monday, stand-up comedians on social media launched a massive awareness campaign to pressure one of their own, Sebastian Maniscalco, to reconsider recent programming decisions at his SiriusXM radio station, Sebastian Maniscalco’s Comedy Radio.

— Hershal Pandya, Vulture, 8 Oct. 2026
The whole story unfolds within a massive narrative arc that spans the roughly 20 years of the hunt for the Monster.

— Nick Vivarelli, Variety, 8 Oct. 2026

Definition of massive

Adjective

Most of the time, Mark just flails, complains, and pouts like a giant baby, and Affleck’s twitchy, rapid-fire delivery can’t give the character any life or depth.

— Bilge Ebiri, Vulture, 8 Oct. 2026
If a crack reaches a giant zucchini’s internal cavity, the zucchini — known as marrow by growers — is disqualified.

— Kyle Melnick, Washington Post, 8 Oct. 2026

Definition of giant

Adjective

The signal, however, is evidence of a colossal magnetic field — not intelligent life.

— Jacopo Prisco, CNN Money, 2 Oct. 2026
The sensational international rescue of the famously sentient creatures, replete with colossal cargo planes, huge crates and Shedd staffers working in the dead of night to transport and care for the whales, must have looked made for social media.

— Arkansas Online, Arkansas Online, 28 Sep. 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 9 Oct. 2026.

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Synonyms of vast

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