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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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“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

This leads the muscles to weaken and stiffen over time and ultimately impacts how you walk, talk, eat and breathe.

From BBC Dec. 4, 2025

“I understand that,” she replied, and could see him stiffen with annoyance again.

From "Son" by Lois Lowry

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

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

This arrangement stiffens the chain of bones and allows it to transmit very high-pitched sounds more efficiently, a characteristic often seen in animals such as echolocating bats that can detect ultrasound.

From Science Daily Mar. 12, 2026

Beside me, Helene’s body stiffens like water freezing into ice.

From "An Ember in the Ashes" by Sabaa Tahir

When the heart must work harder because of exercise, heat, stress or another cause, stiffened blood vessels may be less able to accommodate the increased blood flow.

From Science Daily Aug. 1, 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

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

The baby stiffened at Mrs. Trepids touch and then squirmed, as if to release herself.

From "Ruby Holler" by Sharon Creech

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

The inquest was told rigor mortis - the stiffening of the body after death - had set in.

From BBC Mar. 20, 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

The flexible stems and shoots thrust aside by Sticky’s fall were stiffening and spreading back into place.

From "The Mysterious Benedict Society" by Trenton Lee Stewart




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