roughen

Red whirls on this rabbit’s tongue are filiform papillae, which roughen the tongue and help move food around the mouth.

From New York Times ● May 21, 2024

The general idea is that ground surfaces roughen after the mass movement of rocks and soil, so that landslide deposits are the roughest right after the landslide occurs and become smoother over time.

From Science Daily ● Nov. 7, 2023

The goal is to roughen up the surface so the paint adheres to the old polyurethane coat.

From Washington Post ● Mar. 2, 2022

“If you’re going out, I would apply Conformist Hair Paste to roughen up the texture,” he says.

From Forbes ● Jun. 10, 2014

Do you notice that this stencil has been shellacked so the edges won't roughen when I scrub?

From Ethel Morton and the Christmas Ship by Mabell S. C. (Mabell Shippie Clarke) Smith

Wells has a deep, oaky baritone that roughens to a grumble in its lower register.

From The New Yorker ● Feb. 4, 2019

The surface of the fluid is homogeneous, smooth, and destitute of that mixture of suspended sand and decomposed organic matter, which roughens and streaks the surface of less limpid rivers.

From Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 by Alexander von Humboldt

You had better get on board now, before the sea roughens.

From The Billow and the Rock by E.J. Wheeler

It roughens the smooth round particles of sandy soils, and prevents their compacting, as they are often liable to do.

From The Elements of Agriculture A Book for Young Farmers, with Questions Prepared for the Use of Schools by George E. (George Edwin) Waring

"We put in the clear glass, and the wind blows the sand against it and roughens the outer surface like ground glass."

From Among the Forces by Henry White Warren

Auto-tune aside, fans will notice that Thorn's voice has deepened and roughened.

From BBC ● Apr. 22, 2023

To achieve the shells’ luminous surfaces, Utzon covered them with more than a million handcrafted ceramic tiles, their surfaces roughened by trace amounts of crushed stone, a technique inspired by Japanese pottery.

From New York Times ● Aug. 2, 2021

It was more like a shift in temperature or light, a texture inside of me that roughened.

From New York Times ● Mar. 31, 2021

He sang his conversational lyrics in a voice roughened by a hard-luck life, particularly after throat cancer left him with a disfigured jaw.

From Washington Times ● Apr. 7, 2020

Dirt was in the baseboard that John scrubbed every Saturday, and roughened the cupboard shelves that held the cracked and gleaming dishes.

From "Go Tell It on the Mountain" by James Baldwin

Though it may seem counterintuitive, roughening a ball’s surface delays the separation of the boundary layer and keeps a ball in turbulent flow longer.

From Scientific American ● Nov. 19, 2022

“When I close my eyes, I can still feel that moment,” said the other daughter, Samia, her voice roughening as her eyes filled with tears.

From Los Angeles Times ● Aug. 31, 2022

Instead he interprets traditional Yolngu chants, raising and roughening his gentle voice while a Western orchestra plays churning, minimalist accompaniments around him.

From New York Times ● Jul. 13, 2018

Wilmington’s Council had been closing shortfalls of 5 percent to 10 percent for several years, and the compounding effect was roughening the edges of a city that aggressively marketed its coastal quality of life.

From New York Times ● Jul. 5, 2011

My throat began to ache and my voice dropped, roughening into a deep crackle, as if my vocal cords had turned to sandpaper.

From "Educated" by Tara Westover