stiffen

verb

stiff·​en ˈsti-fən How to pronounce stiffen (audio)
stiffened; stiffening ˈsti-fə-niŋ How to pronounce stiffen (audio)
ˈstif-niŋ

intransitive verb

: to become stiff or stiffer
stiffener
ˈsti-fə-nər How to pronounce stiffen (audio)
ˈstif-nər
noun

Examples of stiffen in a Sentence

She stiffened when he grabbed her shoulder. The dogs stiffened in alarm. The law would stiffen penalties for tax evasion.
Recent Examples on the Web Sport mode stiffens the suspension, lowers the ride height just over .5 inches, and delivers 100 percent of the e-motors’ output, noticeably sharpening the response to the accelerator. Angus MacKenzie, Robb Report, 10 Apr. 2024 Heart valves and arteries stiffened with age, which forced the heart to work harder and increased the likelihood of high blood pressure and heart attacks. Eli Saslow Erin Schaff Eli Saslow, New York Times, 8 Apr. 2024 Gabriel tried to distract himself with the tactile sensations of farming: wet dirt stiffening his hands and massing under his nails; cold creeping through his jeans and long underwear; humidity swelling through his sinuses. Lily Meyer, The Atlantic, 25 Mar. 2024 The Ravens’ defense stiffened as the game wore on — holding the Chiefs to 17 points was more than commendable — but the offense never got in rhythm. Baltimore Sun Staff, Baltimore Sun, 28 Jan. 2024 Tara Moseley Hyde, CEO of People Advocating Recovery, said during the Jan. 18 House Judiciary Committee meeting that stiffening penalties isn’t the way to address a public health crisis. Hannah Pinski, The Enquirer, 23 Jan. 2024 Routine exercise – especially dynamic exercise like running – maintains a compliant heart and prevents stiffening. William Cornwell, The Conversation, 21 Feb. 2024 Before his death, the boy was sheltering with other medically vulnerable children in a garage, and his body was stiffening up because of a lack of medical care. NBC News, 13 Feb. 2024 The winter-specific tread is designed to provide secure grip on ice and snow, and the rubber won’t stiffen and freeze in frigid temperatures. Maggie Slepian, Travel + Leisure, 9 Feb. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'stiffen.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

15th century, in the meaning defined at transitive sense

Time Traveler
The first known use of stiffen was in the 15th century

Dictionary Entries Near stiffen

Cite this Entry

“Stiffen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stiffen. Accessed 18 Apr. 2024.

Kids Definition

stiffen

verb
stiff·​en ˈstif-ən How to pronounce stiffen (audio)
stiffened; stiffening -(ə-)niŋ How to pronounce stiffen (audio)
: to make or become stiff or stiffer
stiffener noun

More from Merriam-Webster on stiffen

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