Merriam-Webster's Word of the Day

Merriam-Webster's Word of the Day for September 23, 2026 is:





compendious • \kum-PEN-dee-us\ • adjective

A compendious book, research paper, article, etc. is one that provides most or all of the information one may want or require. Similarly, a person might be said to have compendious knowledge of a subject if they have a full and wide-ranging—that is, comprehensive—grasp of it. Compendious can also describe something that is both comprehensive and concise, as in “a compendious summary.”

// The coveted book prize was awarded to a compendious history of environmental literature in the United States.

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Examples:

“For much of a career that spanned decades, he pursued the oscines, or songbirds, of the Neotropics to their habitats in the Southern Hemisphere—sketching, making compendious field notes, and amassing a vast file of images that he used as a reference tool when painting the plates for definitive books …” — Guy Trebay, The Boston Globe, 26 July 2026





Did you know?

When Noah Webster titled his first dictionary, published in 1806, A Compendious Dictionary of the English Language, he used compendious to mean “short, brief, concise, summary,” as he defined it on the book's 58th page. This may come as a surprise given that compendious is now most often used to mean “comprehensive” and is applied to books, papers, etc. that are quite lengthy. But Webster’s Compendious Dictionary was no more than a preparation for his two-volume An American Dictionary of the English Language (1828), and compendious traces back to the Latin adjective compendiōsus, meaning “both comprehensive and succinct.” Webster’s title signaled that his debut word compendium would be useful, if not exhaustive. Today, however, compendious asserts comprehensiveness, typically without brevity.

Merriam-Webster's Word of the Day for September 22, 2026 is:





nemesis • \NEM-uh-siss\ • noun

A nemesis is a formidable foe—an opponent or enemy who is very difficult to defeat. As a proper noun, Nemesis refers to the Greek goddess of vengeance.

// She will be playing against her old nemesis for the championship.

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Examples:

"There were never any doubts about the man playing He-Man's nemesis, Skeletor. ... Frank Langella had caught Goddard's eye in 'Amadeus' on Broadway, and—buried under some impressive make-up—relished the opportunity to ham it up as Eternia's villain-in-chief." — Richard Edwards, Space.com, 12 Aug. 2026





Did you know?

Nemesis was the Greek goddess of vengeance, a deity who doled out rewards for noble acts and punishment for evil ones. The Greeks believed that Nemesis didn't always punish an offender immediately but might wait generations to avenge a crime. In English, nemesis originally referred to someone who brought a just retribution, but nowadays people are more likely to see simple animosity rather than justice in the actions of a nemesis.

Merriam-Webster's Word of the Day for September 21, 2026 is:





elegiac • \el-uh-JYE-ak\ • adjective

Elegiac means “of, relating to, or comprising an elegy," an elegy being a sorrowful poem or song, and especially one that expresses sorrow for someone who is dead. Elegiac often describes a poem, song, piece of writing, etc. that mourns something now past.

// The elegiac tone of the singer’s first album always leaves me in tears.

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Examples:

“[Jacqueline] Harpman was writing in a different era, but the elegiac loneliness of her fiction anticipates our own solitary and screen-bound present. Is there anyone out there? her book seems to ask. How do I find you?” — Katy Waldman, The New Yorker, 3 Aug. 2026





Did you know?

As a wise man once sang, “sad songs say so much.” Just how much they say has never been definitively quantified, but it is notable that English has the perfect adjective, elegiac, to describe things that are sorrowful or nostalgic in ways that suggest poetic and musical tearjerkers. Elegiac was borrowed into English in the 15th century from the Late Latin adjective elagiacus, which in turn comes from the Greek word elegeiakos. Elegeiakos traces back to the Greek word for “elegiac couplet,” which was elegeion. It is no surprise, then, that the earliest meaning of elegiac referred to such poetic couplets. These days, of course, the word is also used to describe anything sorrowful or nostalgic. As you may have guessed, another descendant of elegeion in English is elegy, which in its oldest sense refers to a poem in elegiac couplets, and now can also refer to a somewhat broader range of laments for something or someone that is now lost.

Merriam-Webster's Word of the Day for September 20, 2026 is:





volition • \voh-LISH-un\ • noun

Volition is a formal word that means “the power to make your own choices or decisions.” Usually, though not always, volition follows own, as in “left the company of her own volition.”

// Every choice I made was of my own volition and not due to outside influence.

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Examples:

“Believe it or not, a lot of people find worms in their birdbaths. … Some birds, most notably crows, like to give their food a good dunking before eating, so there’s a possibility worms in the birdbath were left by these fastidious birds. The most likely reason is that the worms crawled there on their own volition.” — Joan Morris, The Marin Independent Journal (San Rafael, California), 3 May 2026





Did you know?

When you do something of your own volition, you do it voluntarily, which makes sense—both volition and voluntary ultimately come from the Latin velle, meaning “to wish” or “to will.” English speakers borrowed volition from French in the 17th century, using it at first to mean “an act of choosing,” a meaning Herman Melville employed in Moby-Dick (1851): “Almost simultaneously, with a mighty volition of ungraduated, instantaneous swiftness, the White Whale darted through the weltering sea.” By then, however, the word had also developed an additional meaning, “the power to choose,” which is now more common.

Merriam-Webster's Word of the Day for September 19, 2026 is:





aggrandize • \uh-GRAN-dyze\ • verb

To aggrandize someone (or something) is to enhance their power, wealth, position, or reputation. Aggrandize can also mean "to increase or enlarge" or "to praise highly."

// Critics of the book argue that the author aggrandizes corrupt politicians.

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Examples:

"... many congregants spoke of their admiration for Tsietsi. They came forward to tell stories of previous encounters with him. While some were obvious fabrications, meant to aggrandize the narrator by his association with Tsietsi, most seemed true." — Lynda Schuster, Literary Hub, 16 June 2026





Did you know?

Aggrandize is a grand word, and we don't just mean that in praise. The word literally traces back to the Latin adjective grandis, meaning "fully grown, large, great," and it has enhanced the English language for over three centuries. Nowadays, aggrandize is often paired with self, either the word or the prefix: to "aggrandize oneself" or to "be self-aggrandizing" is to glorify oneself, or to intently pursue power, wealth, and the like. It's of course great to take pride in a job well done, but we appreciate those who keep it real—after all, not every hit can be a grand slam.