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

syllogism • \SIL-uh-jiz-um\  • noun

Syllogism refers to a formal argument in logic that is formed by two statements and a conclusion which must be true if the two statements are true.

// An example of a syllogism is “All men are mortal; no gods are mortal; therefore no men are gods.”

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Examples:

“The Dallas area was a hotbed of competitive debate, and, at first, the oratorical polish of [Rebecca F.] Kuang’s teammates was intimidating. She spent months being coached on the art of the syllogism, a kind of logical argument in which one deduces a conclusion from a set of premises. ‘The idea that you could take something that seemed up to personal charisma or rhetorical choice and map it to this very rigid, argumentative structure was mind-blowing,’ she said.” — Hua Hsu, The New Yorker, 25 Aug. 2025

Did you know?

For those trained in formal argument, the syllogism is a classical form of deduction, specifically an argument consisting of a major and a minor premise and a conclusion. One example is the inference that “kindness is praiseworthy” from the premises “every virtue is praiseworthy” and “kindness is a virtue.” Syllogism came to English through Anglo-French from the Latin noun syllogismus, which in turn can be traced back to the Greek verb syllogizesthai, which combines logizesthai (meaning “to calculate,” and coming from logos, meaning “word” or “reckoning”) with syl-, which comes from syn-, meaning “with” or “together.”

Merriam-Webster's Word of the Day for February 18, 2026 is:

Goldilocks • \GOHL-dee-lahks\  • adjective

Goldilocks describes something that has or produces an optimal balance usually between two extremes. In astronomy, it specifically designates an area of planetary orbit neither too hot nor too cold to support life.

// The couple, undecided between country and city living, took the Goldilocks option and moved to a bustling college town surrounded by nature.

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Examples:

"It's a well-known fact that the time between 3 and 5 o'clock in the afternoon is a liminal space. ... It's too late for lunch, too early for dinner. But it's the Goldilocks hour for a little treat." — Nikita Richardson, The New York Times, 8 May 2025

Did you know?

English has always drawn inspiration from fables and fairy tales, stories bursting with metaphors that help users get their verbiage just right: one may fall down a rabbit hole (thank you, Alice's Adventures in Wonderland), cry wolf (we see you, Aesop's Fables), or hope one day to meet one's Prince Charming (brava, Cinderella). The adjective Goldilocks is borrowed, of course, from Goldilocks and the Three Bears, a perennial favorite in which a little girl so-named for her golden hair finds the perfect balance between hot and cold, soft and hard, small and large—all in the home of unknowing strangers. Since the mid-1960s, English speakers have applied Goldilocks to all things regarded as perfectly balanced or happily medium. The word has specific applications in astronomy, with the phrase "Goldilocks zone" designating an area of planetary orbit in which temperatures are neither too hot nor too cold to support life.