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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.

Inspired, Brundage became obsessed with web scrapers—automated programs that hoover up vast amounts of web data for analysis.

From The Wall Street Journal • Apr. 3, 2026

One of biology's biggest questions is how Earth became home to such a vast range of plants and animals.

From Science Daily • Apr. 1, 2026

“Importantly, electric vehicle sales still very much matter to Tesla’s earnings; they accounted for the vast majority of 2025 company revenue,” says Cannacord analyst George Gianarikas.

From Barron's • Apr. 1, 2026

County’s vast education system, which includes 80 school districts and 371 charter schools.

From Los Angeles Times • Apr. 1, 2026

A sea separates me now from all that, a vast blue sea I cannot cross.

From "Across So Many Seas" by Ruth Behar

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.