Evolution of a language
How American English became its own language: 10 historical twists
Published on November 13, 2026
If George Washington walked into an average office tomorrow, how many words do you think he’d struggle to understand? Would he be confused by a modern American accent? Ever since the first settlers arrived in North America, British and American English started growing apart. Now, the language that was forged in the US carries traces of its history. In this article, we’ll explore 10 of those modifications.
Kept archaisms that the UK forgot
Linguists have a name for what happened to American English after the colonies split from Britain: colonial lag, coined by scholar Albert Marckwardt in 1958. It means that the speech of populations who move away from the mother country doesn't always keep pace with the changes happening back home.
While British English evolved, the colonies, more isolated, often kept speaking the way everyone did the day they left. A good example of this is "fall," from the 1500s phrase "fall of the leaf," which was standard English until London traded it for the French import "autumn" in the late 1600s. Another is "gotten," which appears throughout Shakespeare, but was no longer used by the 1700s.
The pronunciation of the Rs
The British "R" that vanishes in words like "car" and "father" is a rather new invention. In the 1600s, every English speaker pronounced every R, until fashionable London society started dropping them in the late 1700s as a mark of refinement. Some American port cities with strong ties to England, like Boston and New York, picked up the trend too, which is exactly why some coastal accents still drop the R today.
But settlers moving inland and westward never got the update, so most of American English kept pronouncing every R, the way England once did.
The evolution of ways of saying "you"
Old English had a perfectly good word for the second person plural: It was gē (pronounced like yay), which then evolved to "ye." Then, sometime in the Middle Ages, "you" swallowed both the singular and the plural, and English speakers have been improvising clarifying terms ever since.
The American South answered with "y'all," likely shaped by Scots-Irish settlers who said, "ye aw." Pittsburgh shortened Scottish "you ones" into the now-iconic "yinz." New York and Philadelphia went with "youse." And across much of the rest of the country, "you guys" became the default, first recorded in the 1890s and now widespread.
Incorporation of Native American words
When English colonists met animals and plants they'd never seen before, they borrowed the words already in use for them. How else would you call a specific nut that is so hard to crack that you need to use a stone? They went for the term "pecan," derived from the Miami-Illinois Algonquian pakani.
"Skunk" comes from Massachusett Algonquian, the result of combining roots for "urinate" and "fox." "Opossum" derives from Virginia Algonquian for "white dog," and "squash" comes from Narragansett, where it meant "eaten raw or uncooked."
Incorporation of terms from immigrating languages
If you ask for a "biscuit" in England, you’ll get something quite different from a chocolate chip cookie. That's because "cookie" isn't English; it's Dutch, from koekje, "little cake," and was carried into New York by Dutch settlers and first recorded in 1808.
This pattern repeats with all of the languages that came into the country, carried by early settlers and immigrants. German immigrants gave America "kindergarten," "pretzel," and "delicatessen." Another example is Spanish-speaking vaqueros of the Southwest, who gave the language "ranch," "corral," and "rodeo." Absorbing these terms started gradually distancing American English from its British counterpart.
Words that acquired a different meaning in America
Another phenomenon that distanced the two versions of the language was that of old words earning new meanings in America, while Britain retained their old use or forgot them. Take "corn" for example: in Old English it just meant "grain," any grain, which is why the British still call wheat "corn" today, and Americans reserved it for maize.
"Diaper," for centuries, only named a diamond-woven fabric pattern, until Americans repurposed it for infant cloths by 1837, a meaning Britain never adopted, preferring "nappy" instead. "Faucet," which referred to a small part of an old tap mechanism, came to name the whole fixture in the US.
Inverted endings: How the -re became -er
There’s another rule: any word ending in the French-derived "-re" got flipped to "-er" to match how Americans actually said it. So, theatre became theater, centre became center, and the same happened to caliber, fiber, liter, and somber.
Britain, having borrowed these spellings from French centuries earlier, saw no reason to abandon tradition just because the pronunciation no longer matched the letters.
Words developed from technology
When technology evolves, either a brand new word is invented, or an old one is repurposed. On either side of the Atlantic, regional dialects came up with different terms for the same inventions.
It’s why Americans chose to refer to cellular phones as "cells," while the British named them "mobiles." Battery-powered electric lights became "flashlights" in the US and "torch" in the UK. Another example is the transportation called "streetcar" in the US and "tram" in the UK.
Noah Webster's dictionaries and standardized media
Noah Webster was a Connecticut schoolteacher who in 1783 published what became known as the "Blue-Backed Speller," a schoolbook that eventually sold an estimated 60 to 100 million copies, making it one of the best-selling books in American history.
Webster believed a shared, simplified spelling would help unite a young, fractured nation, so in his 1828 masterwork, An American Dictionary of the English Language, twenty-two years in the making, he deliberately Americanized hundreds of words: "colour" to "color," "defence" to "defense," "plough" to "plow."
Radio and TV helped homogenize the "American accent"
What is "General American"? In 1925, linguist George Philip Krapp coined this term, and by 1930 a colleague was insisting some 90 million Americans spoke it natively. But it wasn’t wholly true.
Early radio and film actually relied on something else entirely: the "Mid-Atlantic accent," a deliberately cultivated Anglo-American blend taught at Juilliard and heard in nearly every prestige film through World War II. That artificial accent collapsed after the war, and broadcasters pivoted toward a flatter, Midwestern-inflected sound, epitomized by Walter Cronkite, that masked regional origin entirely.