Something referred to as "dross" is of low value or quality. Dross may also be used as a technical term to refer to unwanted material that is removed from a mineral to make it better.

// He's a skilled editor who has a talent for turning literary dross into gold.

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"Hollywood optimists argue that AI's greatest weakness will be originality. After all, viewers already complain of being deluged with formulaic, low-budget dross churned out by streaming platforms because an algorithm deems it popular." — Tom Leonard, The Scottish Daily Mail, 23 Feb. 2026

Dross has been a part of the English language since Anglo-Saxon times. It comes from the Old English word drōs, meaning "dregs," those solid materials that fall to the bottom of a container full of a liquid such as coffee or wine. While dross today is used to refer to anything of low value or quality, its earliest use is technical: dross is a metallurgy term referring to solid scum that forms on the surface of a metal when it is molten or melting—remove the dross to improve the metal. The metallurgical sense of the word is often hinted at in its general use, with dross set in contrast to gold, as when 19th century British poet Christina Rossetti wrote "Besides, those days were golden days, / Whilst these are days of dross."

Zany describes people or things that are very strange and silly.

// The cartoon series centers around two zany characters, best friends who also happen to be space aliens, constantly amusing each other with outrageous antics.

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“The fourth and final episode centers on a birthday party for The Cat in the Hat. ... Seeing where the clues lead, the friends embark on a joyous adventure of songs, dances, silly challenges, and plenty of zany energy from their wacky striped friend.” — Sarah Scott, Parents, 22 Dec. 2025

The oddballs among us are likely familiar with zany as an adjective, meaning “eccentric.” But did you know the word originated as a noun—one that has withstood the test of time? Zanies have been theatrical buffoons since the heyday of the Italian commedia dell’arte, in which a “zanni” was a stock servant character, often an intelligent and proud valet with abundant common sense and a love of practical jokes. Zanni comes from a dialect nickname for Giovanni, the Italian form of John. The character quickly spread throughout European theater circles, inspiring such familiar characters as Pierrot and Harlequin, and by the late 1500s an anglicized version of the noun zany was introduced to English. The adjective appeared within decades, and eventually both adopted more general meanings to refer to or describe those of us who are quipsters and weirdos.

Undulate is a formal word that means “to move or be shaped like waves.”

// On the approach to the tulip festival, visitors are greeted by a large field of the colorful flowers undulating in the wind.

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“When sufficiently heated, the fresh cheese contracts, sweating whey from the curds that provides liquid to cook the dough, which will plump up and undulate slightly as it expands.” — Karima Moyer-Nocchi, The Epic History of Macaroni and Cheese: From Ancient Rome to Modern America, 2026

Undulate and inundate (“to cover something with a flood of water”) are word cousins that flow from unda, the Latin word for “wave.” No surprise there. But would you have guessed that abound, surround, and redound are also unda offspring? While their modern definitions have nothing to do with waves or water, at some point in their early histories, they all meant “to overflow,” and caught a wave from there.

Cadence is used to refer to various rhythmic or repeated motions, activities, or patterns of sound, or to the way a person's voice changes by gently rising and falling while they are speaking.

// Ivy relaxed at the beach, listening to the cadence of the surf.

// He speaks with a soft Southern cadence.

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“Urged by a fast-talking auctioneer and his familiar cadence, paddles shot up as bids climbed into the four- and five-figure range.” — Lily Moayeri, Rolling Stone, 29 Jan. 2026

A cadence is a rhythm, or a flow of words or music, in a sequence that is regular (or steady as it were). But lest we be mistaken, cadence also lends its meaning to the sounds of Mother Nature (such as birdsong) to be sure. Cadence comes from Middle English borrowed from Medieval Latin’s own cadentia, a lovely word that means “rhythm in verse.” (You may also recognize a cadence cousin, sweet cadenza, as a word that is familiar in the opera universe.) And from there our cadence traces just a little further backward to the Latin verb cadere “to sound rhythmically, to fall.” Praise the rising and the falling of the lilting in our language, whether singing songs or rhyming or opining on it all.

Something described as frenetic is filled with excitement, activity, or confusion. The word is a synonym of frantic.

// The event was noisy and frenetic, which prompted us to leave early.

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“As Marty Mauser, a wannabe table tennis champion who dreams and deceives his way through his shamble of a life ... [Timothée Chalamet] injects his scenes with enough nervous energy to fuel a plane. Nowhere will you see a performance more frenetic or impressive.” — Ralph Jones, Vanity Fair, 9 Feb. 2026

In modern use, frenetic can describe a focused and intense effort to meet a deadline, or dancing among a hyped-up crowd, but the word’s Middle English predecessor, frenetik, had a narrower use: it was used to describe those exhibiting a severely disordered state of mind. If you trace frenetic back far enough, you’ll find that it comes from Greek phrenîtis, a term referring to an inflammation of the brain. As for frenzied and frantic, they’re not only synonyms of frenetic but relatives as well. Frantic comes from frenetik, and frenzied traces back to phrenîtis.

Apotheosis refers to the perfect form or example of something, or to the highest or best part of something. It can also mean “elevation to divine status; deification.” It is usually singular, but the plural form is apotheoses.

// Some consider (however ironically) french fries to be the apotheosis of U.S. cuisine.

// Their music reached its creative apotheosis in the late 2010s, which is also when they won two Grammys.

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“At its simplest level, Canada appears in American literature as a wilderness escape from a more urbanized United States. ... The apotheosis of this view of Canada as a wilderness getaway might be Sylvia Plath’s poem ‘Two Campers in Cloud Country,’ subtitled ‘Rock Lake, Canada’ and written about a camping trip she and her husband Ted Hughes took through Canada and the northeastern US in 1959.” — Brooke Clark, LitHub.com, 17 Apr. 2025

Among the ancient Greeks, it was sometimes thought fitting to grant someone “god” status. Hence the word apothéōsis, from the verb apotheóō or apotheoûn, meaning “to deify.” (All are rooted in the Greek word theós, meaning “god,” which we can also thank for such religion-related terms as theology and atheism.) There’s not a lot of literal apotheosizing to be had in modern English, but apotheosis is thriving in the 21st century. It can refer to the highest or best part of something, as in “the celebration reaches its apotheosis in an elaborate feast,” or to a perfect example or ultimate form, as in “a movie that is the apotheosis of the sci-fi genre.”

To scrutinize something is to examine it carefully especially in a critical way.

// I closely scrutinized my opponent's moves before making my own.

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"The governor proposes a balanced budget, and the General Assembly scrutinizes every line." — J.B. Jennings, The Baltimore Sun, 5 Feb. 2026

Scrutinize the history of scrutinize far back enough and you wind up sifting through trash: the word comes from Latin scrutari, which means "to search, to examine," and scrutari likely comes from scruta, meaning "trash." The etymology evokes one who searches through trash for anything of value. The noun scrutiny preceded scrutinize in English, and in its earliest 15th century use referred to a formal vote, and later to an official examination of votes. Scrutinize was established in the 17th century with its familiar "to examine closely" meaning, but retained reference to voting with the specific meaning "to examine votes" at least into the 18th century. (Votes are still commonly said to be scrutinized in the general sense of the word.) And while the term scrutineer can be a general term referring to someone who examines something, it is also sometimes used in British English specifically as a term for someone who takes or counts votes.

As an interjection, eureka is used to express excitement when a discovery has been made. When used as an adjective, eureka describes something (typically a moment) that is characterized by a usually sudden triumphant discovery. 

// After years of trying to piece together a concrete business idea, I had a eureka moment and everything made sense.  

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“Back in 2020, Trautmann and fellow college student Max Steitz were lamenting the unrelenting loss of Louisiana wetlands, while sharing a bottle of wine. It was a eureka moment, as Trautmann and Steitz realized that by crushing wine bottles and other disposable glass into sand, they could relieve pressure on landfills and simultaneously help fend off coastal erosion.” — Doug MacCash, nola.com (New Orleans, Louisiana), 5 Dec. 2025 

When people exclaim “Eureka!” they are harking back to a legendary event in the life of the Greek mathematician and inventor Archimedes. While wrestling with the problem of how to determine the purity of gold, he had the sudden realization that the buoyancy of an object placed in water is equal in magnitude to the weight of the water the object displaces. According to one popular version of the legend, he made his discovery at a public bathhouse, whereupon he leapt out of his bath, exclaiming in Greek “Heurēka! Heurēka!” (“I have found it!”), and ran home naked through the streets. The absence of a contemporary source for this anecdote has done nothing to diminish its popularity over the centuries. The English word eureka, which of course hails from heurēka, has also retained its popularity; its use as an interjection dates to the early 17th century, and it gained a brand-new use in the early 20th century as an adjective describing moments of discovery or epiphany.

Nadir refers to the lowest or worst point of something. When used in astronomy, nadir describes the point of the celestial sphere that is directly opposite the zenith and vertically downward from the observer.

// Only once the novel’s protagonist reaches her nadir does she arouse the reader’s empathy, and we root for her to climb back to respectability.

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“Sacrament dives right into the nadir of the 2020 health crisis, following a group of nurses who have moved into makeshift housing near a California hospital, to isolate from their families during the height of the case surge.” — James Folta, LitHub.com, 1 July 2025

Nadir is part of the galaxy of scientific words that have come to us from Arabic, a language that has made important contributions to the English lexicon especially in the fields of mathematics, astronomy, medicine, and chemistry. The source of nadir is naḍhīr, meaning “opposite”—the opposite, that is, of the zenith, the highest point of the celestial sphere which is positioned vertically above the observer. (The word zenith itself is a modification of another Arabic word that means “the way over one’s head.”) Though born of the heavens, both words are called upon to refer to earthy things too, especially a significant point or period of time, be it a high point or low one.

Jejune is a formal word that means "uninteresting" or "boring." It is also used as a synonym of juvenile to describe things (such as behaviors, attitudes, etc.) that are immature, childish, or simplistic.

// The movie adaptation employed surreal visual effects to tell the story, making the plot, jejune in the novel, archetypal rather than artless.

// The professor made rude and jejune remarks about the students' artwork.

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"While [author Helen] Garner has journaled most of her life, she burned her early diaries in a bonfire having deemed them too embarrassing or jejune." — The Irish Times, 29 Mar. 2025

Starved for excitement? You won't get it from something jejune. The term comes to us from the Latin word jejunus, which means "empty of food," "hungry," or "meager." When English speakers first used jejune back in the 1600s, they applied it in ways that mirrored the meaning of its Latin parent, lamenting "jejune appetites" and "jejune morsels." Something that is meager rarely satisfies, and before long jejune was being used not only for meager meals or hunger, but also for things lacking in intellectual or emotional substance. It's possible that the word gained its now-popular "juvenile" or "childish" sense when people confused it with the look-alike French word jeune, which means "young."