monumental
adjective
mon·u·men·tal ˌmän-yə-ˈmen-tᵊl 
1
: serving as or resembling a monument : massive
monumental sculptures
also : highly significant : outstanding
a monumental painting that stunned the American public
2
: of or relating to a monument
modern monumental architecture
3
: very great
a monumental misunderstanding
monumentality
ˌmän-yə-mən-ˈta-lə-tē
noun -ˌmen-
monumentally
ˌmän-yə-ˈmen-tᵊl-ē
adverb 
Synonyms
- august
- baronial
- epic
- gallant
- glorious
- grand
- grandiose
- heroic
- heroical
- Homeric
- imperial
- imposing
- magnific
- magnificent
- majestic
- massive
- noble
- proud
- regal
- royal
- splendid
- stately
See all Synonyms & Antonyms 
Example Sentences
It's more than a mistake; it's a case of monumental stupidity. the monumental complexity of the issue Repairing the damage will be a monumental task. The class was about modern monumental architecture.
Recent Examples on the Web Ahead of the monumental moment, Etienne posted behind-the-scenes photos and a video of himself, his mother, and his sister, laughing, posing, and praying before heading to the ceremony. 
Amethyst Tate, Peoplemag, 13 Sep. 2022 The monumental price tags for NFL football and The Lord of the Rings certainly could force Amazon into scaling back its huge investments down the line if the return isn’t sufficient. Jacob Carpenter, Fortune, 13 Sep. 2022 In the place of Days of our Lives will be NBC's new midday news show, NBC News Daily, which couldn't come at a more monumental time. Jessica Radloff, Glamour, 11 Sep. 2022 Ethereum backers say the Merge is a monumental moment for the $1 trillion crypto sector. Reuters, NBC News, 9 Sep. 2022 After a 70 year reign, which was celebrated with the Diamond Jubilee in June, this is a monumental moment of transition for both the royal family and the commonwealth. Roxanne Adamiyatt, Town & Country, 8 Sep. 2022 This represents a monumental moment in women’s cycling and sports. Liz Elting, Forbes, 2 Aug. 2022 To mark the monumental moment, Vogue100 and Giambattista Valli staged a salon-style fashion show with 20 looks straight from the Giambattista Valli haute couture archives, one from every collection to be exact. Eliseé Browchuk, Vogue, 6 July 2022 Spilker, who’s worked on the probes since the first launch in 1977, said that keeping contact with them has been a monumental effort using the largest radio telescopes of the Deep Space Network, which NASA uses to relay commands to its spacecraft. Tom Metcalfe, NBC News, 30 Aug. 2022 See More
Amethyst Tate, Peoplemag, 13 Sep. 2022 The monumental price tags for NFL football and The Lord of the Rings certainly could force Amazon into scaling back its huge investments down the line if the return isn’t sufficient. Jacob Carpenter, Fortune, 13 Sep. 2022 In the place of Days of our Lives will be NBC's new midday news show, NBC News Daily, which couldn't come at a more monumental time. Jessica Radloff, Glamour, 11 Sep. 2022 Ethereum backers say the Merge is a monumental moment for the $1 trillion crypto sector. Reuters, NBC News, 9 Sep. 2022 After a 70 year reign, which was celebrated with the Diamond Jubilee in June, this is a monumental moment of transition for both the royal family and the commonwealth. Roxanne Adamiyatt, Town & Country, 8 Sep. 2022 This represents a monumental moment in women’s cycling and sports. Liz Elting, Forbes, 2 Aug. 2022 To mark the monumental moment, Vogue100 and Giambattista Valli staged a salon-style fashion show with 20 looks straight from the Giambattista Valli haute couture archives, one from every collection to be exact. Eliseé Browchuk, Vogue, 6 July 2022 Spilker, who’s worked on the probes since the first launch in 1977, said that keeping contact with them has been a monumental effort using the largest radio telescopes of the Deep Space Network, which NASA uses to relay commands to its spacecraft. Tom Metcalfe, NBC News, 30 Aug. 2022 See More Word History
First Known Use
1596, in the meaning defined at sense 1
monumental
adjective
1
as in epic
large and impressive in size, grandeur, extent, or conception a monumental misunderstanding that had far-reaching consequences Synonyms & Similar Words
Relevance
- epic
- magnificent
- glorious
- massive
- majestic
- imposing
- grand
- colossal
- royal
- impressive
- proud
- regal
- imperial
- heroic
- grandiose
- wonderful
- tremendous
- splendid
- heroical
- formidable
- remarkable
- noble
- august
- gallant
- luxurious
- operatic
- baronial
- lavish
- cosmic
- stupendous
- stately
- extraordinary
- marvelous
- sublime
- monstrous
- marvellous
- gorgeous
- prodigious
- awesome
- superb
- magnific
- terrific
- wondrous
- extravagant
- Homeric
- apocalyptic
- striking
- inflated
- cosmical
- princely
- divine
- overblown
- sumptuous
- kingly
- awful
- heavenly
- celestial
- palatial
- apocalyptical
- resplendent
- sensational
- pompous
- opulent
- redoubtable
- lordly
- queenly
- splendiferous
- killer
- prepossessing
- palatine
Antonyms & Near Antonyms
- modest
- unheroic
- humble
- unimpressive
- unimposing
- ordinary
- common
- unprepossessing
- average
- trivial
- sordid
- lowly
- mediocre
- insignificant
- abject
- petty
- trifling
- meretricious
- puny
- shabby
- mean
- paltry
- run-of-the-mill
- second-rate
- measly
2
as in huge
unusually large serves a monumental sundae that usually requires three people to finish it Synonyms & Similar Words
- huge
- gigantic
- colossal
- enormous
- massive
- tremendous
- vast
- giant
- mammoth
- immense
- astronomical
- titanic
- monstrous
- big
- bumper
- mountainous
- astronomic
- grand
- mighty
- monster
- gargantuan
- heroic
- sizable
- mega
- great
- oceanic
- humongous
- prodigious
- cosmic
- herculean
- planetary
- oversize
- super
- elephantine
- substantial
- leviathan
- galactic
- whopping
- cyclopean
- pharaonic
- majestic
- major
- humungous
- considerable
- walloping
- heroical
- jumbo
- staggering
- supersized
- gigantesque
- oversized
- formidable
- whacking
- good
- imposing
- handsome
- supersize
- cosmical
- king-sized
- extensive
- Brobdingnagian
- hulking
- vasty
- super-duper
- grandiose
- voluminous
- king-size
- stupendous
- outsize
- gross
- hefty
- overwhelming
- Himalayan
- infinite
- monolithic
- towering
- tidy
- bulky
- overgrown
- goodly
- lofty
- outsized
- largish
- sizeable
- cavernous
- august
- immeasurable
- boundless
Antonyms & Near Antonyms
- tiny
- minuscule
- miniature
- microscopic
- infinitesimal
- diminutive
- small
- micro
- microscopical
- teensy
- pocket
- teeny
- wee
- pygmy
- bitty
- little bitty
- little
- minute
- puny
- mini
- midget
- smallish
- bantam
- petite
- microminiature
- teeny-weeny
- teensy-weensy
- Lilliputian
- undersized
- undersize
- dinky
- dwarfish
- pint-sized
- pint-size
- half-pint
3
as in major
having great meaning or lasting effect the moon landing was seen as a monumental event in human history Synonyms & Similar Words
- major
- historic
- significant
- important
- big
- substantial
- momentous
- tectonic
- meaningful
- exceptional
- remarkable
- pivotal
- earthshaking
- earth-shattering
- weighty
- eventful
- consequential
- much
- seminal
- distinguished
- material
- decisive
- notable
- noteworthy
- outstanding
- strategic
- impressive
- serious
- distinctive
- outstanding
- worthy
- great
- fatal
- crucial
- prominent
- fateful
- famous
- valuable
- grave
- worthwhile
- illustrious
- earnest
- prestigious
- key
- critical
- eminent
- preeminent
- central
- sincere
- notorious
- noble
- renowned
- essential
- heavy
- vital
- all-important
Antonyms & Near Antonyms
- small
- trivial
- minor
- insignificant
- inconsequential
- trifling
- little
- negligible
- unimportant
- slight
- inconsiderable
- petty
- worthless
- paltry
- obscure
- unknown
- nameless
- anonymous
- uncelebrated