Linguistics experts recently detailed how social media, pop culture, and internal language mechanics are shifting American English. During a discussion on the PBS News podcast "In Pursuit of Happiness," linguists identified specific words and pronunciations that have changed as populations migrate and consume different forms of media. The report is part of a series examining the evolution of American life leading up to the country's 250th anniversary.
Valerie Fridland, a professor of linguistics at the University of Nevada, explained that differences in pronunciation often stem from how speakers treat unstressed syllables. Using the word "butter" as an example, Fridland noted that standard southern British speakers typically drop the "r" sound, whereas American speakers retain the "r" but soften the "t" sound. She attributed these variations to geographic distance and social status differences that have developed over time.
Anne Curzan, a linguist at the University of Michigan, reported that while slang terms like "rizz" attract public attention, more subtle shifts are occurring in everyday grammar. Curzan stated that the word "shall" is disappearing from common usage, and "must" is being replaced by phrases like "have to" or "need to" when expressing obligation. Additionally, Curzan observed a prepositional shift among younger speakers, where the phrase "on accident" is increasingly used instead of "by accident."
The reported changes reflect the influence of modern social media and increased domestic migration on local dialects. A person moving between the North, South, or West may notice their vocabulary and vowel sounds adjusting to match their new environment or the media they consume. For younger generations, these shifts—such as using "on accident"—become the new standard, potentially leading to generational differences in formal writing and speech that will become more apparent as these speakers enter the professional workforce.
The ongoing evolution of American English serves as a record of historical and social movement. As specific words like "shall" fade, future educational curricula and standardized testing may eventually reflect these changes in usage. The discussion of these trends occurred as part of a six-episode series released on August 10, 2026. The full series, which also covers the history of satire and national parks, is currently available on the PBS News YouTube page and various podcast platforms for public access.