vast
[adjective]
Synonyms: huge, boundless, colossal, enormous, gigantic, great, immense, massive, monumental, wide

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Contrasted words: confined, limited, narrow, restricted
Related Words: big, large, ample, capacious, spacious, broad, expansive, far-flung, wide, widespread, astronomical, cosmic

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English Thesaurus: big, large, major, considerable/substantial, huge/massive/enormous, ...

[TahlilGaran] English Synonym Dictionary ▲

vast S3 W2 /vɑːst $ væst/ adjective
[Date: 1500-1600; Language: Latin; Origin: vastus 'empty, desolate, very large']

1. extremely large Synonym : huge
vast amounts/numbers/quantities/sums etc (of something)
The government will have to borrow vast amounts of money.
The refugees come across the border in vast numbers.
vast areas/expanses/tracts etc (of something)
vast areas of rainforest
In the past five years, there has been a vast improvement in graduation rates.

2. the vast majority (of something) used when you want to emphasize that something is true about almost all of a group of people or things:
The vast majority of books on the subject are complete rubbish.
—vastness noun [uncountable]

[TahlilGaran] Dictionary of Contemporary English ▲

big:
a big city
a big guy
a big mistake
Lack of funding is the biggest problem.
Getting a car has made a big difference to my life.
large a slightly more formal word than big, used to describe objects and amounts:
a large bowl
Large areas of the forest have been destroyed.
The museum attracts a large number of visitors.
major [only before noun] big and important:
Pollution is a major problem.
There has been a major change in government policy.
considerable/substantial quite big – used especially about amounts:
They have spent a considerable amount of money on the project.
A substantial amount of heat is lost through the windows.
He had a considerable influence on young musicians.
huge/massive/enormous extremely big:
The table was enormous.
a huge explosion
Their house is huge.
There is a huge amount of work to be done.
There has been a massive increase in oil prices.
The company is massive, operating in 150 countries.
A massive fire destroyed more than thirty homes.
He’s been under an enormous amount of stress recently.
The changes will have an enormous impact.
great [only before noun] very big – used especially to describe the level or number of something:
He achieved great success in America.
The college offers a great number of courses.
a great advantage
vast extremely big – used about areas, distances, numbers, or amounts:
vast areas of rainforest
A vast number of tourists visit the island every year.
gigantic extremely big and much bigger than other things of the same type:
Gigantic waves crashed onto the beach.
colossal extremely big – used about amounts or objects:
James ran up a colossal phone bill.
a colossal statue of Napoleon
tremendous having an extremely big effect:
There have been some tremendous changes.
My new job will be a tremendous challenge.
The children were making a tremendous amount of noise.

[TahlilGaran] English Thesaurus ▲