magnum opus

noun

mag·​num opus ˈmag-nəm-ˈō-pəs How to pronounce magnum opus (audio)
: a great work
especially : the greatest achievement of an artist or writer

Did you know?

You may recognize magnum (meaning "great") as a Latin word that shows up in altered forms in several English words, and perhaps you can also come up with a few words that are related to opus ("work"). Magnitude, magnanimous, opulent, and operate are some obvious relations of the two. Magnum opus, which entered English in the 18th century, retains the original Latin spelling and the literal meaning "great work." Although the term most often refers to literary, musical, or artistic productions, it has been used to describe many kinds of great works, including games, construction projects, and even surgical techniques.

Examples of magnum opus in a Sentence

His last novel was his magnum opus. this symphony is usually considered Beethoven's magnum opus
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Other artists have spent decades laboring over their magnum opuses—Michael Heizer and James Turrell, with their sprawling land projects in the American West (City and Roden Crater, respectively), spring to mind—but few, if any, have worked only on those pieces. Julie Belcove, Robb Report, 23 Mar. 2025 After being glued to Nuggets’ bench, Peyton Watson responds with 3-point barrage in front of OKC’s bench Nikola Jokic knows this is his magnum opus. Bennett Durando, The Denver Post, 13 Mar. 2025 The pop star in question is Alfred Moretti (played by John Malkovich), an enigmatic music icon who, after decades out of the spotlight, re-emerges to announce a new album billed as his magnum opus. Jessica Wang, EW.com, 14 Mar. 2025 The pop star in question is Alfred Moretti (played by John Malkovich), an enigmatic music icon who, after decades out of the spotlight, re-emerges to announce a new album billed as his magnum opus. Jessica Wang, EW.com, 14 Mar. 2025 See All Example Sentences for magnum opus

Word History

Etymology

Latin

First Known Use

1791, in the meaning defined above

Time Traveler
The first known use of magnum opus was in 1791

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Cite this Entry

“Magnum opus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/magnum%20opus. Accessed 1 May. 2025.

Kids Definition

magnum opus

noun
mag·​num opus ˌmag-nə-ˈmō-pəs How to pronounce magnum opus (audio)
: a great work and especially the greatest achievement of an artist or writer
Last Updated: - Updated example sentences
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