Synonyms for Vast:

• adj.

  •astronomical (adjective)
  • epic,
  • astronomic,
  • sizeable,
  • Mega,
  • ginormous.
  •cosmic (adjective)
  • global,
  • worldwide.
  •infinite (adjective)
  • boundless,
  • endless,
  • eternal,
  • interminable,
  • limitless,
  • undefined,
  • infinite.
  •large (adjective)
  • ample,
  • awesome,
  • baggy,
  • big,
  • bulky,
  • capacious,
  • cavernous,
  • colossal,
  • comprehensive,
  • copious,
  • elephantine,
  • enormous,
  • expansive,
  • extensive,
  • gargantuan,
  • generous,
  • giant,
  • gigantic,
  • goodly,
  • grand,
  • grandiose,
  • great,
  • huge,
  • humongous,
  • immense,
  • impressive,
  • large,
  • lofty,
  • magnificent,
  • majestic,
  • mammoth,
  • massive,
  • princely,
  • prodigious,
  • roomy,
  • sizable,
  • soaring,
  • spacious,
  • towering,
  • tremendous,
  • voluminous.
  •substantial (adjective)
  • well-built.
  •titanic (adjective)
  • larger-than-life.
  •unfathomed (adjective)
  • unsounded.
  •very large; wide in range (adjective)
  • all-inclusive,
  • ample,
  • astronomical,
  • big,
  • boundless,
  • broad,
  • capacious,
  • colossal,
  • comprehensive,
  • detailed,
  • endless,
  • enormous,
  • eternal,
  • expanded,
  • extensive,
  • far-flung,
  • far-reaching,
  • forever,
  • giant,
  • gigantic,
  • great,
  • huge,
  • illimitable,
  • immeasurable,
  • immense,
  • infinite,
  • limitless,
  • mammoth,
  • massive,
  • measureless,
  • monstrous,
  • monumental,
  • never-ending,
  • prodigious,
  • prolonged,
  • spacious,
  • sweeping,
  • titanic,
  • tremendous,
  • unbounded,
  • unlimited,
  • voluminous,
  • widespread.
  •wide-ranging (adjective)
  • sweeping.

• n.

  •
  • high.
  •
  • behemoth,
  • cyclopean,
  • herculean,
  • heroic,
  • jumbo,
  • mighty,
  • monster,
  • monstrous,
  • monumental,
  • mountainous,
  • stupendous,
  • titanic,
  • walloping,
  • whopping,
  • Brobdingnagian,
  • Gigantesque,
  • Massy,
  • Pythonic,
  • Bunyanesque,
  • mastodonic.
  •extensive (noun)
  • all-inclusive,
  • astronomical,
  • detailed,
  • far-flung,
  • far-reaching,
  • prolonged,
  • widespread.

• Other synonyms:

  •
  • boundless,
  • bulbous,
  • clunky,
  • commodious,
  • cyclopean,
  • gaping,
  • inordinate,
  • largish,
  • man-sized,
  • measurable,
  • measureless,
  • puffy,
  • significant,
  • walloping,
  • Gigantesque,
  • Massy,
  • Pythonic,
  • overdeveloped,
  • Bunyanesque,
  • mastodonic.
  •
  • full-scale,
  • hefty,
  • larger-than-life,
  • macro,
  • monumental,
  • mountainous,
  • overblown,
  • oversized,
  • swingeing,
  • titanic,
  • whopping.
  •
  • herculean,
  • heroic,
  • monstrous,
  • stupendous.
  •
  • mighty,
  • substantial.
  •
  • handsome.
  •
  • monster.
  •
  • superior.
  •
  • high.
  •general
  • universal.
  •heroic
  • epic.
  •limitless
  • immeasurable.
  •Other relevant words:
  • absolutely,
  • abundant,
  • abysmal,
  • abyssal,
  • all-embracing,
  • all-inclusive,
  • altogether,
  • amplitude,
  • approximately,
  • area,
  • as a whole,
  • astonishing,
  • astronomic,
  • astronomical,
  • at ease,
  • authentically,
  • awe-inspiring,
  • bathe,
  • beast,
  • before,
  • behemoth,
  • bigger,
  • bigness,
  • bottomless,
  • boundless,
  • breadth,
  • broad,
  • broadly,
  • broadness,
  • brute,
  • bulbous,
  • catholic,
  • certainly,
  • classic,
  • cleanse,
  • clunky,
  • commodious,
  • commonly,
  • considerable,
  • considerably,
  • consume,
  • cosmic,
  • cosmopolitan,
  • countless,
  • cyclopean,
  • das,
  • deep,
  • delicately,
  • demon,
  • detailed,
  • dissipate,
  • durable,
  • encyclopedic,
  • endless,
  • enduring,
  • enormity,
  • epic,
  • epoch-making,
  • eternal,
  • everlasting,
  • excessive,
  • exorbitant,
  • expanded,
  • expanse,
  • expansion,
  • exquisitely,
  • extended,
  • extension,
  • extent,
  • extravagant,
  • extreme,
  • extremely,
  • far,
  • far-flung,
  • far-reaching,
  • fiend,
  • finely,
  • forever,
  • frequently,
  • fritter,
  • full-scale,
  • fullness,
  • galactic,
  • gaping,
  • generally,
  • global,
  • glorious,
  • goodly,
  • greatly,
  • greatness,
  • gross,
  • handsome,
  • heavens,
  • hefty,
  • herculean,
  • heroic,
  • high,
  • highly,
  • historic,
  • hulking,
  • illimitable,
  • immeasurable,
  • immenseness,
  • immensity,
  • incalculable,
  • incessant,
  • incomputable,
  • incredible,
  • indeterminable,
  • indeterminate,
  • inestimable,
  • inexhaustible,
  • infinite,
  • innumerable,
  • inordinate,
  • intercontinental,
  • interminable,
  • international,
  • inundate,
  • jumbo,
  • king-size,
  • large-scale,
  • largeness,
  • larger-than-life,
  • largish,
  • lasting,
  • leviathan,
  • limitless,
  • loftily,
  • loose,
  • lusty,
  • macro,
  • man-sized,
  • marvellous,
  • marvelous,
  • measurable,
  • measureless,
  • measurement,
  • memorable,
  • mend,
  • mickle,
  • mighty,
  • monolithic,
  • monster,
  • monstrosity,
  • monstrous,
  • monumental,
  • mountainous,
  • multitudinous,
  • myriad,
  • national,
  • nationwide,
  • never-ending,
  • notable,
  • noteworthy,
  • numberless,
  • numerous,
  • ocean,
  • oceanic,
  • omniscience,
  • open,
  • ordinarily,
  • oscillate,
  • outrageous,
  • outsize,
  • outstanding,
  • overblown,
  • overcome,
  • overgrown,
  • overlarge,
  • overpower,
  • oversize,
  • oversized,
  • overwhelm,
  • pathless,
  • permanent,
  • perpetual,
  • pharaonic,
  • planetary,
  • pond,
  • ponderous,
  • preposterous,
  • profound,
  • prolonged,
  • prominent,
  • puffy,
  • really,
  • reclaim,
  • recover,
  • recuperate,
  • refresh,
  • regain,
  • regularly,
  • reinstate,
  • renew,
  • renovate,
  • repossess,
  • restore,
  • resume,
  • retrieve,
  • revive,
  • roominess,
  • sea,
  • significant,
  • size,
  • sizeable,
  • softly,
  • solid,
  • sound,
  • spaciousness,
  • spectacular,
  • spreading,
  • squander,
  • staggering,
  • stout,
  • stoutness,
  • strapping,
  • stretched out,
  • striking,
  • strong,
  • stupendous,
  • sturdy,
  • substantial,
  • substantially,
  • super,
  • superior,
  • sweeping,
  • swingeing,
  • swinging,
  • terrific,
  • thumping,
  • thundering,
  • tidy,
  • titanic,
  • trackless,
  • tract,
  • unbounded,
  • unbridled,
  • unceasing,
  • unchecked,
  • unconfined,
  • unconscionable,
  • uncontrolled,
  • uncounted,
  • undefined,
  • unending,
  • unfathomable,
  • unfathomed,
  • unforgettable,
  • universal,
  • unlimited,
  • unmeasured,
  • unplumbed,
  • unrestrained,
  • unrestricted,
  • unsounded,
  • unspecific,
  • unstoppable,
  • untold,
  • vastness,
  • walloping,
  • wash away,
  • weighty,
  • whacking,
  • whopper,
  • whopping,
  • wide,
  • wide-open,
  • wide-ranging,
  • widespread,
  • wonderful,
  • wondrous,
  • worldwide,
  • Brobdingnagian,
  • Extending,
  • Extensiveness,
  • Gigantean,
  • Gigantesque,
  • Massy,
  • Mega,
  • Pantology,
  • Shoreless,
  • Vasty,
  • World-wide,
  • Open sea,
  • high seas,
  • Cosmical,
  • Pythonic,
  • overdeveloped,
  • amplitudinous,
  • uncountable,
  • ginormous,
  • Bunyanesque,
  • far-ranging,
  • mastodonic,
  • supersized,
  • super-duper,
  • well-built,
  • Uncircumscribed,
  • giantlike,
  • devil,
  • overscale,
  • not intimate,
  • not practical,
  • extra-large,
  • spread out,
  • accurate knowledge,
  • history-making,
  • encyclopedic knowledge.

Antonyms for Vast:

• adj.

  • very large; wide in range
    bounded, calculable, ending, finite, insignificant, limited, little, miniature, minute, narrow, restricted, short, small, teeny, tiny, trivial, unimportant.
  • Other antonyms:
    bantam, bitty, brief, diminutive, dinky, dwarfish, half-pint, inconsiderable, infinitesimal, insignificant, limited, little, mean, micro, microscopic, midget, mini, miniature, minuscule, minute, narrow, paltry, petite, petty, pint-size, pocket, puny, scanty, short, slender, slight, small, smallish, teensy, teensy-weensy, teeny, teeny-weeny, tiny, trifling, trivial, undersized, wee, little bitty, microminiature.

• Other antonyms:

  • n. t.
    bantam, bitty, bounded, diminutive, dinky, dwarfish, infinitesimal, insignificant, lilliputian, limited, little, micro, microscopic, midget, mini, miniature, minuscule, minute, narrow, negligible, paltry, petite, pint-size, pocket, puny, pygmy, short, small, smallish, teensy, teensy-weensy, teeny, teeny-weeny, tiny, trifling, trivial, undersized, unimportant, little bitty, microminiature.