Dictionary.com
Thesaurus.com
Synonyms

monumental

American  
[mon-yuh-men-tl] / ˌmɒn jəˈmɛn tl /

adjective

  1. resembling a monument; massive or imposing.

    Synonyms:
    colossal, immense
  2. exceptionally great, as in quantity, quality, extent, or degree.

    a monumental work.

  3. of historical or enduring significance.

    a monumental victory.

  4. Fine Arts. having the quality of being larger than life; of heroic scale.

  5. of or relating to a monument or monuments.

  6. serving as a monument.


monumental British  
/ ˌmɒnjʊˈmɛntəl /

adjective

  1. like a monument, esp in large size, endurance, or importance

    a monumental work of art

  2. of, relating to, or being a monument

  3. informal (intensifier)

    monumental stupidity

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of monumental

From the Late Latin word monumentālis, dating back to 1595–1605. See monument, -al 1

Explanation

Whether it's a monumental effort requiring vast amounts of strength or a monumental cruise ship with eleven floors and five sets of elevators, the word monumental describes something imposing or massive in size. Monumental can also refer to something that's of outstanding importance or significance. A monumental decision for you would be one that changes your life — like the day you got engaged or when you decided to move to New York to be an actor. The word monumental can also be used if you're talking about a monument, a statue or structure commemorating a person or event. You might admire the monumental stonework on the statue in the town square.

Keep Reading on Vocabulary.com

Vocabulary lists containing monumental

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Monumental Nature includes 30 works across the botanic gardens in west London and will run until 31 January 2027.

From BBC • May 9, 2026

BBC Film, Lionsgate and BBC Studios gave the green light to make the feature film to Monumental Television, part of ITV Studios.

From BBC • Feb. 27, 2026

A second half headed goal from Flamengo center-back Danilo settled a scrappy encounter at the Estadio Monumental in Lima – the fifth Libertadores final in the past six seasons to feature two clubs from Brazil.

From Barron's • Nov. 29, 2025

Curated by Erin Christovale, “Alice Coltrane: Monumental Eternal” dives deep into the spiritual and sonic worlds of the jazz icon and devotional leader that Coltrane was, and her lasting influence on art and music.

From Los Angeles Times • Feb. 18, 2025

Accordingly, on August 1, 1812, the corner stone of the Monumental Church was laid, the lot having been purchased by the city for $5,000.

From Historic Shrines of America Being the Story of One Hundred and Twenty Historic Buildings and the Pioneers Who Made Them Notable by Faris, John T. (John Thomson)

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "monumental" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com