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Definitions

vast

[vast] / væst /
ADJECTIVE
very large; wide in range
Synonyms
STRONGEST
ample big boundless broad colossal endless enormous extensive far-flung far-reaching gigantic great huge immense infinite limitless mammoth massive monumental spacious tremendous unlimited
WEAK
all-inclusive astronomical capacious comprehensive detailed eternal expanded forever giant illimitable immeasurable measureless monstrous never-ending prodigious prolonged spread-out stretched-out sweeping titanic unbounded voluminous widespread
Antonyms
STRONGEST
bounded calculable ending finite insignificant limited little miniature minute narrow restricted short small teeny tiny trivial unimportant

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The large dark regions that form the "seas" of the Man in the Moon are actually vast impact basins created during a period of intense collisions that ended around 3.8 billion years ago.

From Science Daily • Apr. 8, 2026

Cereal plants absorb the vast majority of their nitrogen needs during their early growth.

From Salon • Apr. 8, 2026

During one orbit, Anders captured Earth's brilliant blue hue standing out against the vast darkness of space and accentuated by the desolate, grey lunar horizon in the foreground.

From Barron's • Apr. 7, 2026

Using technology to evaluate trees across vast timberlands remains hard.

From The Wall Street Journal • Apr. 7, 2026

The willingness of whoever this person was to sell him such vast amounts of cheap insurance gave Mike Burry another idea: to start a fund that did nothing but buy insurance on subprime mortgage bonds.

From "The Big Short" by Michael Lewis