stiffen

This approach enabled us to create a material that can bend, buckle, or stiffen differently under slow movements versus sudden impacts -- without electronics, sensors, or active control.

From Science Daily ● Jun. 11, 2026

“It probably would stiffen their spine,” said Brian Latell, a former CIA analyst who wrote a biography of Castro and his older brother Fidel Castro.

From The Wall Street Journal ● May 21, 2026

She has also vowed to stiffen prison sentences and to impose a state of emergency in areas worst hit by crime.

From Barron's ● Feb. 1, 2026

Calling the eradication of extortion “one of the great challenges” facing Mexico, Sheinbaum pledged to bolster enforcement, stiffen penalties and increase safeguards for anyone receiving threats.

From Los Angeles Times ● Dec. 16, 2025

I felt Twig stiffen for a few moments, trying to figure out what to say, and I worried I’d said too much truth—that I’d scared her away.

From "The Science of Breakable Things" by Tae Keller

US Defence Secretary Pete Hegseth responded to the deaths with a post on X that said: "Godspeed, heroes. Their sacrifice only stiffens our resolve."

From BBC ● Jul. 19, 2026

Once the pH returns to normal, the tissue stiffens again and locks into its new form.

From Science Daily ● May 28, 2026

The biggest reason is that our maximum heart rate slows with age, and the heart muscle stiffens, reducing its pumping effectiveness.

From Barron's ● May 23, 2026

More than 13% of Americans 75 and older have the condition, in which the aortic valve stiffens and narrows.

From The Wall Street Journal ● Apr. 25, 2026

Grandma tenses her jaw, and her body stiffens.

From "Split the Sky" by Marie Arnold

Refusing to form such a coalition, even if it meant giving up a sure route to the prime ministry, would have stiffened this view.

From Slate ● Nov. 5, 2026

Others argued the particles stiffened the surrounding material like glue.

From Science Daily ● May 13, 2026

They reckon it may have stiffened the resolve of the German public and discouraged rebels within the dying Nazi regime.

From MarketWatch ● Mar. 12, 2026

Marinello said that could change if countries stiffened the penalties for stealing cultural heritage by calling it cultural terrorism.

From The Wall Street Journal ● Oct. 20, 2025

If she begged the child to bend, he stiffened.

From "In the Year of the Boar and Jackie Robinson" by Bette Bao Lord

Softening rather than stiffening when moving through space requires embracing your body’s natural sway and tiny micro-movements, like an ankle wobbling or knee jiggling.

From Los Angeles Times ● Aug. 18, 2026

IPF is a chronic, progressive lung disease characterized by irreversible scarring and stiffening of lung tissue.

From Barron's ● Mar. 30, 2026

It’s hard to imagine a greater accomplishment than to achieve peace while stiffening the sinews of deterrence.

From The Wall Street Journal ● Mar. 1, 2026

"Our observations are consistent across multiple length scales and link connective tissue stiffening to altered biochemical signaling in cancer cells."

From Science Daily ● Jan. 24, 2026

She could never be sure what thoughts were hidden behind that impassive face, but she had learned to recognize the sudden stiffening of his jaw muscles that meant she had said something shocking.

From "The Witch of Blackbird Pond" by Elizabeth George Speare