Listen closely to how some Californians talk and you’ll hear it.

The T sound in words like “water” or “accent” can soften or disappear. “Water” becomes “wader.” “Mountain” turns into “moun-in.” Even “winter” can sound like “winner.”

They are small changes. Easy to miss. But linguists say those subtle patterns are part of something bigger. California does have an accent — and it may have helped shape the way much of the country speaks today.

For decades, pop culture has had a very specific idea of how Californians sound.

In 1982, Moon Zappa introduced her “Valley Girl” character from the song of the same name alongside her father, musician Frank Zappa, on “Late Night with David Letterman.” The exaggerated speech pattern quickly became a national stereotype.

Movies like 1982’s “Fast Times at Ridgemont High” and “Valley Girl” reinforced it, followed by “Clueless” in the 1990s. Later, sketches like “The Californians” on “Saturday Night Live” turned the accent into parody.

But behind the stereotype, experts say there is something real.

“From a phonetic point of view, just in terms of accent is the California Vowel Shift,” said Dr. Keith Johnson, a linguist and Professor of the Graduate School at UC Berkeley.

Instead of one obvious sound, it is a pattern of subtle changes in how vowels are pronounced.

“California doesn’t have an accent, it has multiple,” said Dr. Moira Saltzman, a linguistics professor at Cal State Northridge.

The way people speak can vary depending on region, background and community, from Los Angeles to the Bay Area and beyond.

Still, one version became the most recognizable, the so-called Valley Girl voice.

“The vowels that made Valley Girls sound like Valley Girls are here to stay,” Saltzman said.

What started as a stereotype stuck around and evolved.

Some of the most recognizable features of California speech are not just sounds, they are habits.

In interviews like Emma Chamberlain’s conversation with rapper Jack Harlow at the Met Gala, one word comes up again and again: “like.”

Linguists say it is often used not just as a comparison, but to quote, pause or emphasize a thought.

Then there is vocal fry, the low, creaky tone often associated with reality TV personalities like Kim Kardashian.

Both became widely recognizable through media and widely imitated.

Once you know what to listen for, the accent can be easy to spot.

Johnson recalled hearing Olympic figure skater Alyssa Liu speak and immediately recognizing where she was from based on her voice.

“When Alyssa Liu won the gold medal and was being interviewed, I started thinking, ‘She sounds exactly like some of these people I’ve been interviewing in East Oakland,’” Johnson said, referring to his Voices of Oakland project at UC Berkeley. 

But California speech did not stay in California.

Through movies, television and now social media, those patterns spread.

What started as a regional way of speaking became part of mainstream American English.