Merriam-Webster's Word of the Day

Merriam-Webster's Word of the Day for February 28, 2026 is:





congruous • \KAHNG-groo-us\ • adjective

Something described as congruous is in agreement, harmony, or correspondence with something else. Congruous can also describe something that is appropriate for a particular circumstance or requirement, or a thing that is marked or enhanced by harmonious agreement among its constituent elements.

// Their professional achievements were congruous with their academic abilities.

// The low bookshelf forms a congruous barrier between the spaces.

// It is a congruous, plausible story, consistent in all its details.

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Examples:

“Hannah is a sustainability consultant and climate impact manager, which is congruous with an outdoor ethos and the culture around bike guiding ...” — Wendy Altschuler, Forbes, 3 Sept. 2024





Did you know?

Congruous had only been part of the English language for a few decades in 1615, when a book about the Church of Rome referred to “teaching most congruous to reason.” The word has remained more or less true to its Latin roots: it comes from Latin congruus, an adjective that comes from the verb congruere, meaning “to come together” or “to agree.” (Its more common antonym, incongruous is about the same age.) Another familiar congruere descendant in English is congruent, which first appeared at least a century earlier with the same meaning as congruous. English also acquired congrue, a verb meaning “to be in harmony” or “to agree,” from congruere, but it has since become obsolete.

Merriam-Webster's Word of the Day for February 27, 2026 is:





nettle • \NET-ul\ • verb

To nettle someone is to make them angry or annoyed.

// Though he tried to maintain a friendly tone, the town official was clearly nettled by the reporter's suggestion that the town was at fault.

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Examples:

"I can't help but be reminded of an idiom that irked me no end during times of familial stress ... : 'Use it or lose it.' The message being that if a skill or resource is not regularly utilised, over time, we will lose it. As nettled as I was by it, I now feel obliged to acknowledge the obvious truth behind the catchphrase." — Gwen Loughman, The Journal (Ireland), 21 Aug. 2025





Did you know?

If you've ever brushed against nettles, you know those plants have sharp bristles that can leave you smarting and itching. The painful and irritating rash that nettles cause can last for days, but at least it is a rash with a linguistic silver lining. The discomfort caused by nettles can serve to remind one that the verb nettle is a synonym of irritate. Nettle originated as a plant name that we can trace to the Old English word netel. Eventually, people likened the persistent stinging itch caused by the plant to the nagging aggravation of being annoyed, and nettle joined the likes of vex, peeve, and irk in describing such little miseries.

Merriam-Webster's Word of the Day for February 26, 2026 is:





knackered • \NAK-erd\ • adjective

Knackered is an adjective mostly used informally in British English to mean “very tired or exhausted.”

// Unfortunately, I was too knackered after work to join them for dinner.

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Examples:

“‘How are you doing?’ ‘Yeah, good thanks... just tired.’ I don’t know about you, but it feels like I’m having a version of this exchange at least once a day. It seems that everyone I know is genuinely and profoundly knackered. My friends say it. My postman says it. My teenage son says it. Even my partner, who usually has the energy levels of a Duracell-powered soft toy, grudgingly admits his batteries are drained.” — Sara Robinson, The Western Mail (Cardiff, Wales), 22 Nov. 2025





Did you know?

An apt synonym for knackered might be the phrase “dead tired” for more than one reason. Knackered is a 20th century coinage that comes from the past participle of knacker, a slang term meaning “to kill,” as well as “to tire, exhaust, or wear out.” This verb knacker likely comes from an older noun knacker, which first referred to a harness-maker or saddlemaker, and later to a buyer of animals no longer able to do farmwork (or their carcasses). Knackered is used on both sides of the Atlantic but is more common among British speakers.

Merriam-Webster's Word of the Day for February 25, 2026 is:





onomatopoeia • \ah-nuh-mah-tuh-PEE-uh\ • noun

Onomatopoeia refers to the creation of words that imitate natural sounds. It can also refer to the words themselves, such as buzz and hiss.

// The author’s clever use of onomatopoeia delights children especially.

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Examples:

“As they began to slurp, columns of noodles steadily streamed upward into their open jaws. The jazz soundtrack of Hiromi’s Sonicwonder playing ‘Yes! Ramen!!’ was punctuated by a gurgling roar reminiscent of shop vacs inhaling shallow pools. ‘We call it ‘hitting the zu’s,’’ says Steigerwald, noting the reference to zuru zuru, the onomatopoeia for slurping ramen in Japanese comics.” — Craig LaBan, The Philadelphia Inquirer, 18 Jan. 2026





Did you know?

English speakers have only used the word onomatopoeia since the 1500s, but people have been creating words that imitate the sounds heard around them for much longer; chatter, for example, dates to the 1200s. Some onomatopes (as onomatopoeic words are sometimes called) are obvious—fizz, jingle, toot, and pop do not surprise. But did you know that other onomatopes include bounce, tinker, and blimp? Boom! Now you do. In fact, the presence of so many imitative words in language spawned the linguistic bowwow theory, which hypothesizes that language originated in the imitating of natural sounds. While it’s highly unlikely that onomatopoeia is the sole impetus for human language, it certainly made a mark, which is nothing to sneeze at.

Merriam-Webster's Word of the Day for February 24, 2026 is:





umpteen • \UMP-teen\ • adjective

Umpteen is an informal adjective meaning "very many" or "indefinitely numerous."

// The artist has painted the same subject umpteen times, yet each piece has its own unique quality.

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Examples:

"The life of a showgirl often includes umpteen costume changes, elaborate props and copious amounts of hairspray." – The Economist, 4 Oct. 2025





Did you know?

There may not be a gazillion ways in English to refer to a large, indefinite number, but there are definitely more than a soupçon. Many of these, such as zillion, bazillion, kazillion, jillion, and bajillion, start with -illion (as in million) and add a satisfying consonant or syllable in front for some extra oomph. The adjective umpteen does the same for -teen, with the oomph provided by the ump in umpty. Umpty, an adjective meaning "such and such" (as in "umpty percent" or "umpty-four") arose, like umpteen, in the latter half of the 1800s. We only occasionally use umpty these days, but you're bound to hear or read umpteen and umpteenth ("latest or last in an indefinitely numerous series") any number of times.