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Definitions

stiffen

[stif-uhn] / ˈstɪf ən /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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Chinese leader Xi Jinping has said that young people should stiffen their spines and embrace hardship.

From The Wall Street Journal Apr. 28, 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

This involves the buildup of dense, fibrous tissue around the tumor, made up of cells and proteins that stiffen and inflame the area.

From Science Daily Jan. 30, 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 can see her stiffen and tighten her grip on the handle of her briefcase.

From "Things Not Seen" by Andrew Clements

The illness causes breathing difficulties and creates scar tissue that stiffens the lungs, making it difficult to breathe and for oxygen to enter the bloodstream.

From BBC Jun. 10, 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

Metcalf, bringing all her blue-collar brilliance to the role, stiffens Linda’s spine.

From Los Angeles Times Apr. 29, 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

The beater forms billions of microscopic air pockets and stiffens the egg proteins.

From "The Omnivore's Dilemma" by Michael Pollan

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

Europe’s spine stiffened in part because 2025 exceeded expectations economically, says Jeremie Peloso, chief European strategist at BCA Research.

From Barron's Mar. 7, 2026

Drive up the A34 road from Alfred the Great’s capital at Winchester to Oxford and you trace the forgotten spine of an older England, with stretches stiffened by Roman roads.

From The Wall Street Journal Jan. 23, 2026

At that Anna stiffened and looked ready to object, but Young Petey gave a slight nod and mouthed, We’re fine.

From "The Last Last-Day-of-Summer" by Lamar Giles

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

"They keep me fit and keep me moving, stop me stiffening up - I'm very determined, I won't give up," she says.

From BBC Oct. 21, 2025

It smashed 300-pound spheres swinging on a pendulum into a fuselage panel to deliberately damage it, causing one of the stiffening rods to break, then repeatedly applied loads representative of those in flight 40,000 times.

From Seattle Times Apr. 15, 2024

Swimming gave him the chance to move and exercise his body, to uncramp it from the stiffening stillness of sitting with a chessboard or a book.

From "Endgame" by Frank Brady




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