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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.

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

In people with Alzheimer's, Aβ accumulates and causes arteries to stiffen, slowing the flow of fluids between brain tissue and cerebrospinal fluid.

From Science Daily • Nov. 11, 2025

This leads them to weaken and stiffen over time and usually affects how you walk, talk, eat and breathe.

From BBC • Aug. 19, 2025

I was startled to feel Edward stiffen at my side.

From "Twilight" by Stephenie Meyer