Synonyms of vast

vast

adjective

ˈvast 

as in huge

unusually large

a vast expanse of land just waiting to be settled

Synonyms & Similar Words

• huge
• enormous
• gigantic
• tremendous
• massive
• giant
• immense
• colossal
• mammoth
• monumental
• astronomical
• mountainous
• sizable
• monstrous
• bumper
• big
• mighty
• titanic
• grand
• monster
• great
• oceanic
• gargantuan
• prodigious
• humongous
• cosmic
• considerable
• mega
• substantial
• oversize
• planetary
• galactic
• heroic
• super
• vasty
• whopping
• elephantine
• herculean
• extensive
• majestic
• handsome
• jumbo
• Himalayan
• staggering
• cyclopean
• formidable
• good
• pharaonic
• gigantesque
• major
• infinite
• Brobdingnagian
• supersized
• leviathan
• voluminous
• imposing
• overwhelming
• goodly
• supersize
• king-size
• super-duper
• gross
• whacking
• tidy
• walloping
• hefty
• outsize
• overgrown
• stupendous
• bulky
• cavernous
• grandiose
• boundless
• largish
• lofty
• immeasurable
• hulking
• monolithic
• towering
• august

Antonyms & Near Antonyms

• tiny
• minuscule
• infinitesimal
• microscopic
• diminutive
• miniature
• small
• pocket
• micro
• little bitty
• bitty
• wee
• teeny
• teensy
• Lilliputian
• little
• puny
• minute
• pygmy
• smallish
• midget
• petite
• mini
• undersized
• microminiature
• teensy-weensy
• teeny-weeny
• bantam
• dinky
• dwarfish
• pint-size
• half-pint

Synonym Chooser

How is the word vast distinct from other similar adjectives?

Some common synonyms of vast are colossal, enormous, gigantic, huge, immense, and mammoth. While all these words mean "exceedingly large," vast usually suggests immensity of extent.

the vast Russian steppes

When might colossal be a better fit than vast?

The words colossal and vast can be used in similar contexts, but colossal applies especially to a human creation of stupendous or incredible dimensions.

a colossal statue of Lincoln

How do enormous and immense relate to one another, in the sense of vast?

Enormous and immense both suggest an exceeding of all ordinary bounds in size or amount or degree, but enormous often adds an implication of abnormality or monstrousness.

an enormous expense

an immense shopping mall

Where would gigantic be a reasonable alternative to vast?

Although the words gigantic and vast have much in common, gigantic stresses the contrast with the size of others of the same kind.

a gigantic sports stadium

When could huge be used to replace vast?

The synonyms huge and vast are sometimes interchangeable, but huge commonly suggests an immensity of bulk or amount.

incurred a huge debt

When would mammoth be a good substitute for vast?

The meanings of mammoth and vast largely overlap; however, mammoth suggests both hugeness and ponderousness of bulk.

a mammoth boulder

Example Sentences

Recent Examples of vast

SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. —Claire Cameron, Scientific American, 21 Feb. 2026

These days, private equity is entering every corner of the vast 401(k) ecosystem that ordinary Americans count on for their golden years. —Dallas Morning News, 21 Feb. 2026

The damage has extended to the vast academic research ecosystem the agency supports. —Lisa Jarvis, Mercury News, 21 Feb. 2026

McPherson had immense social as well as religious influence here and with millions elsewhere through her vast church radio network. —Patt Morrison, Los Angeles Times, 21 Feb. 2026