Synonyms of gigantic

gigantic

adjective

jī-ˈgan-tik 

as in huge

unusually large

a raccoon got into the trash and now there's a gigantic mess in our backyard

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

Synonym Chooser

How is the word gigantic distinct from other similar adjectives?

Some common synonyms of gigantic are colossal, enormous, huge, immense, mammoth, and vast. While all these words mean "exceedingly large," gigantic stresses the contrast with the size of others of the same kind.

a gigantic sports stadium

When is colossal a more appropriate choice than gigantic?

The words colossal and gigantic 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 gigantic?

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

When might huge be a better fit than gigantic?

While the synonyms huge and gigantic are close in meaning, huge commonly suggests an immensity of bulk or amount.

incurred a huge debt

When could mammoth be used to replace gigantic?

While in some cases nearly identical to gigantic, mammoth suggests both hugeness and ponderousness of bulk.

a mammoth boulder

When can vast be used instead of gigantic?

In some situations, the words vast and gigantic are roughly equivalent. However, vast usually suggests immensity of extent.

the vast Russian steppes

Example Sentences

Recent Examples of gigantic

After the House settlement, both schools dissolved their ties with collectives, but many schools still have them in a new era that is essentially a gigantic, expensive experiment. —Kyle Newman, Denver Post, 31 Aug. 2025

Their Instagram announcement—a carousel of the couple's lavish garden engagement photoshoot—has been liked more than 35 million times since it was posted on August 26, with Swifties around the world fawning over the singer's gigantic ring. —Melissa Fleur Afshar, MSNBC Newsweek, 29 Aug. 2025

Fifty-six million years ago there was a major, sudden warming event caused by the release of a gigantic amount of carbon into the atmosphere and ocean. —Kenna Hughes-Castleberry, Space.com, 29 Aug. 2025

Using InSight’s array of seismic detection tools, a team of planetary scientists have identified gigantic formations that break up comparatively smoother regions of mantle. —Andrew Paul, Popular Science, 28 Aug. 2025