Dave Wilton

Dave has a PhD in medieval English literature from the University of Toronto and has been publishing Wordorigins.org since 1997.

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bible (paid)

jejune

The etymology of jejune is a pretty much straightforward one, but the history of the word provides a good illustration of two processes. One, you can clearly see how the word was borrowed from Latin and then anglicized. And two, one of its present-day meanings came about via an erroneous

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tacit

Tacit is an adjective that denotes something that is silently or wordlessly understood. It’s etymology is quite straightforward, a borrowing from the Latin tacitus, the past participle of the verb tacere, meaning to be silent. Thomas Eliot’s 1538 dictionary records the Latin. Early dictionaries like this one included

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main / Main Street / High Street / main / high / highway (paid)

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neon

Neon is a chemical element, a noble gas, with atomic number 10 and the symbol Ne. It was discovered in 1898 by William Ramsay and Morris W. Travers, who named it after the Greek νέον (new). Neon has a small number of applications, the most well known of which is,

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neptunium (paid)

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lunatic-fringe

As commonly used today, a lunatic fringe is an extremist minority in a movement or group. But that’s not its original meaning. The earliest uses of the phrase deprecatingly refer to a woman’s hairstyle, one where the hair is cut straight across the forehead, that is to say,

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SWAT / swatting

SWAT is a US police acronym of the phrase Special Weapons and Tactics. A SWAT team is a paramilitary police unit trained and equipped to engage in situations where violence was expected, such as hostage situations and drug raids. According to Mitchel P. Roth’s Historical Dictionary of Law Enforcement,

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moscovium

Moscovium is a synthetic chemical element with atomic number 115 and the symbol Mc. It is extremely radioactive, its longest-lived isotope has a half-life of less than a second. It has no applications other than pure research. Element 115 was first synthesized in 2003 at the Joint Institute for Nuclear

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neon (paid)

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bachelor

This word for an unmarried man has had several meanings over the centuries. Bachelor is borrowed from Anglo-Norman bacheler, which is presumably from the Latin baccalaria, a division of land. The normal sound changes would lead us to conclude that the French is from the form baccalaris, but that form

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lunatic-fringe (paid)

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SWAT / swatting (paid)

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leap-year

The necessity for adding a day to the calendar every four years is due to the fact that the Earth’s orbit of the sun is not exactly 365 days; it’s closer to 365.25 days. Therefore, about every four years we add one day to the calendar to

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moscovium (paid)

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molybdenum

Molydenum is a chemical element with atomic number 42 and the symbol Mo. It has been known since antiquity but was generally considered a type of lead or graphite. It wasn’t classified as an element until the eighteenth century. The element takes its name from the Latin molybdaena, a

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Valkyrie

Words disappear from the language all the time. The concepts they represent become less useful or they are replaced by spiffier, newer terms and fade into obscurity and eventual disappearance from all but the largest of historical dictionaries. But occasionally these words are plucked from the fields of the slain

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G-man

To an American, a G-man is a federal law enforcement officer, and the G is generally taken to come from government, but this may not be the case. There is an earlier Irish use of G-man used to refer to police officers of the G Division, the detective division, of

mendelevium

Mendelevium is a radioactive, synthetic chemical element in the actinide series with atomic number 101 and the symbol Md. It has no uses outside of pure research. It was first synthesized at the University of California Berkeley by a team led by Stanley G. Thompson that included Albert Ghiorso, Glenn

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molybdenum (paid)

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