Vast

//vɑːst// adj, noun

adj, noun ·Moderate ·College level

Definitions

Noun
  1. 1
    A vast space. poetic

    "they have seemed to be together, though absent, shook hands, as over a vast, and embraced, as it were, from the ends of opposed winds."

  2. 2
    Acronym of visual audio sensory theater. abbreviation, acronym, alt-of
  3. 3
    Acronym of volcanic ash strategic initiative team. abbreviation, acronym, alt-of
Adjective
  1. 1
    Very large or wide (literally or figuratively).

    "The Sahara desert is vast."

  2. 2
    Very great in size, amount, degree, intensity, or especially extent.

    "The exiguity and ſmallneſſe of ſome ſeeds extending to large productions is one of the magnalities of nature, ſomewhat illuſtrating the work of the Creation, and vaſt production from nothing."

  3. 3
    Waste; desert; desolate; lonely. obsolete

    "the empty, vast, and wandering air"

Adjective
  1. 1
    unusually great in size or amount or degree or especially extent or scope wordnet

Synonyms

All synonyms
immenseabysmalampleamplitudinousastronomicastronomical

Example

More examples

"This vast continent is abundant in fossil fuels."

Etymology

From Middle French vaste, from Latin vastus (“void, immense”). Related to waste and German Wüste.

Related phrases

vast majority

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.