giganticgi‧gan‧tic /dʒaɪˈɡæntɪk/ ●●○ adjective 
Word Origin
a gigantic skyscraper► see thesaurus at big—gigantically /-kli/ adverb
Word OriginWORD ORIGINgigantic
ExamplesOrigin:
1600-1700 Greek gigas ‘extremely large person’EXAMPLES FROM OTHER DICTIONARIES
Thesaurus- Gigantic waves more than 40 feet high crashed against the boat.
- a gigantic statue of Buddha
- These gigantic creatures became extinct in the Jurassic period.
- Dotty herself was in the garden, a straw hat of gigantic proportions crowning her untidy thatch of hair.
- Just two seats, an engine and a gigantic price tag of £35,000.
- Nowhere else in a country involved in a gigantic war effort could one have found that kind of power to spare.
- Once upon a time, Triton had been a gigantic deity, ruling the deep ocean of the unknown.
- The house was lit like a Christmas tree and shaped like a gigantic igloo.
- This alarm sounds like a gigantic pencil-sharpener grinding up something awful.
THESAURUSvery big► huge/massive/enormous
Collocations extremely big: · The table was enormous.· a huge explosion· Their house is huge.· There is a huge amount of work to be done.· There has been a massive increase in oil prices.· The company is massive, operating in 150 countries.· A massive fire destroyed more than thirty homes.· He’s been under an enormous amount of stress recently.· The changes will have an enormous impact.
► great [only before noun] very big – used especially to describe the level or number of something: · He achieved great success in America.· The college offers a great number of courses.· a great advantage
► vast extremely big – used about areas, distances, numbers, or amounts: · vast areas of rainforest· A vast number of tourists visit the island every year.
► gigantic extremely big and much bigger than other things of the same type: · Gigantic waves crashed onto the beach.
► colossal extremely big – used about amounts or objects: · James ran up a colossal phone bill.· a colossal statue of Napoleon
► tremendous having an extremely big effect: · There have been some tremendous changes.· My new job will be a tremendous challenge.· The children were making a tremendous amount of noise.
Longman Language Activatorvery big► huge/enormous very big and impressive: · She wears an engagement ring set with a huge diamond.· My grandmother was wearing an enormous hat.· She looked at the huge motorcycle. "I'll never be able to ride that!''· There was an enormous spider in the bottom of the bath.· By the time of his death the company had grown into an enormous multi-national operation.
► great very big and impressive - used especially in literature: · Like great sailing ships, the clouds sped across the sky.· As far as the eye could see, there stretched a great herd of buffalo.
► great big spoken extremely big: · They've built a great big shopping mall in the centre of town.· There are fish in the pool, great big ones.· She was given a great big bunch of flowers.
► massive use this about things that are extremely big and impressive, especially when they are solid and heavy: · Her house is massive.· The ancient temple's massive stone pillars had begun to crumble.· The bell is massive, weighing over forty tons.
► gigantic much bigger than other things of the same type, often in a slightly strange or frightening way: · Gigantic waves more than 40 feet high crashed against the boat.· These gigantic creatures became extinct in the Jurassic period.
► colossal extremely and surprisingly big - used especially about structures, buildings, and other things that have been built: · There was a colossal statue of the King in the middle of the square.· A crane arrived, its colossal arm reaching out of the sky toward the building.
► giant use this about a plant or animal that has grown to an unusually large size, or is of a type that is always much larger than ordinary plants or animals: · Giant cabbages grew in the garden.· Be careful. The forest is full of giant snakes and spiders.· ...and then this giant green monster appeared from the cave.
► extra large use this about packets, bottles, or other products that are much bigger than the size that is usually sold: · an extra large packet of cornflakes· Extra large eggs are generally a better buy than medium or large.
► be a whopper spoken informal to be extremely big compared to the usual size: · Look at the size of that pumpkin -- it's a whopper.
COLLOCATIONS FROM OTHER ENTRIES► enormous/massive/gigantic etc proportions
extremely big SYN huge: · The company is heading towards a disaster of enormous proportions.
a gigantic skyscraper► see thesaurus at big—gigantically /-kli/ adverb