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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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The defective hemoglobin sticks to itself, causing normally flexible cells to stiffen into sickle shapes—a process sometimes called sickling—that block blood flow, damage organs and trigger excruciating pain.

From The Wall Street Journal ● Sep. 9, 2026

“People get scared of the sway, the wobble. If you’ve had a fall before, you get a fear of falling again and you stiffen up, you become protective,” Swanson says.

From Los Angeles Times ● Aug. 18, 2026

This summer, Slegers has strengthened her hand with seven new players, including full-back Ona Batlle, Caldentey's compatriot, and England dynamo Georgia Stanway to stiffen midfield.

From BBC ● Aug. 7, 2026

Depending on the situation, the material can bend, buckle, or stiffen in different ways, all without electronics, sensors, or active control systems.

From Science Daily ● Jun. 11, 2026

The sight seemed to stiffen his resolve, and he nodded.

From "Harry Potter And The Chamber Of Secrets" by J. K. Rowling

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

Over time, inflammation can progress to fibrosis and scarring that stiffens the liver.

From Science Daily ● Mar. 7, 2026

Last year, Alibaba announced a plan to fold food-delivery and online-travel services into its e-commerce unit as competition stiffens in the Chinese market.

From The Wall Street Journal ● Jan. 29, 2026

The degenerative disease creates scar tissue that stiffens the lungs making it difficult to breathe and for oxygen to enter the bloodstream.

From BBC ● Dec. 19, 2025

Aibileen stiffens back into her cautious pose, the one she had when I walked in.

From "The Help" by Kathryn Stockett

The Romans, their ranks stiffened by Genoese and Venetian troops, did their best to resist.

From The Wall Street Journal ● Aug. 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

Johnson’s move appears to have stiffened investors’ spines.

From Barron's ● Feb. 11, 2026

From their midst, one particularly handsome warrior emerged, and Koffi stiffened.

From "Beasts of Prey" by Ayana Gray

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

He felt the starch stiffening against his sides, felt his sweat accumulating in places he could not reach.

From "Lizzie Bright and the Buckminster Boy" by Gary D. Schmidt




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