- of very great area or extent; immense: the vast reaches of outer space.
- of very great size or proportions; huge; enormous: vast piles of rubble left in the wake of the war.
- very great in number, quantity, amount, etc.: vast sums of money.
- very great in degree, intensity, etc.: an artisan of vast skill.
- Literary. an immense or boundless expanse or space.
Origin of vast
SynonymsSee more synonyms for on Thesaurus.com
Examples from the Web for vast
Though this too is debatable given that 25,000 to 40,000 people a year die of influenza—the vast majority of them unvaccinated.When You Get the Flu This Winter, You Can Blame Anti-Vaxxers
January 1, 2015
With its vast web of resources and services, including its support groups, the Center has often helped save these people lives.The LGBT Center That Changed Our Lives
December 22, 2014
It would be difficult to find an issue with less resonance with the vast majority of voters than climate change.Time to Bring Back the Truman Democrats
December 21, 2014
What qualifies as vast enough, as comprehensive enough, as representative enough to faithfully render a city and its people?A History of Paris in 150 Photographs
December 14, 2014
They are for corporations like Hobby Lobby, and vast hospital networks, and, yes, adoption agencies.Do LGBTs Owe Christians an Olive Branch? Try The Other Way Around
December 14, 2014
After all, what vast privileges do you lose with your citizenship.Philothea
Lydia Maria Child
It seemed to have a vast inorganic life of its own, a volition and a whim.Malbone
Thomas Wentworth Higginson
Thrones have toppled and their vast empires have disappeared.
The meeting was held in the vast auditorium of the Circus Building, which was filled.
Vast crowds lined the route, afoot and in every kind of vehicle.
- unusually large in size, extent, degree, or number; immense
- (prenominal) (intensifier)in vast haste
- the vast mainly poetic immense or boundless space
- British dialect a very great amount or number
Word Origin and History for vast
1570s, from Middle French vaste, from Latin vastus "immense, extensive, huge," also "desolate, unoccupied, empty." The two meanings probably originally attached to two separate words, one with a long -a- one with a short -a-, that merged in early Latin (see waste). Very popular early 18c. as an intensifier. Related: Vastly; vastness.