Dictionary.com’s word of the year isn’t really a word — it’s a number that went viral on TikTok. The selection caused a ruckus among lexicographers. But editors argued that social media is a major force in creating new words these days, and the whole point of choosing a word of the year is to “reveal the stories we tell about ourselves and how we've changed.”

It’s no surprise to author Stefan Fatsis, who chronicles the rise of the modern dictionary in his new book, “Unabridged: The Thrill of and Threat to the Modern Dictionary.” He joined Kerri Miller on this week’s Big Books and Bold Ideas to nerd out over words and to talk about the power the humble dictionary has to shape our lives.

“Language bubbles up from below,” Fatsis says. “For at least the last 60 years, the dictionary’s function is to be descriptive, to reflect back on culture the way we humans use language — as opposed to prescriptive, the belief for many generations, which was that dictionaries should tell people how to use language.”

Fatsis also talks about his time being embedded as a lexicographer-in-training at America’s most famous dictionary publisher, Merriam-Webster, and how the internet and AI threaten this most foundational of books.

Guest:

• Stefan Fatsis is a journalist and the author of many books. He’s also responsible for defining 15 words in Merriam-Webster’s online dictionary, including a Kerri Miller favorite — sheeple. His new book is “Unabridged: The Thrill of and Threat to the Modern Dictionary.”

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