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Synonyms

stiffen

American  
[stif-uhn] / ˈstɪf ən /

verb (used with object)

  1. to make stiff.


verb (used without object)

  1. to become stiff.

  2. to become suddenly tense, rigid, or taut, as in bracing oneself for or drawing back from shock, fear, or displeasure.

    He stiffened, expecting to hear the worst.

stiffen British  
/ ˈstɪfən /

verb

  1. to make or become stiff or stiffer

  2. (intr) to become suddenly tense or unyielding

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of stiffen

First recorded in 1490–1500; stiff + -en 1

Explanation

To stiffen is to become stiff or unbending. If your legs stiffen during a long plane flight, you'll want to stretch them out once you land. You can stiffen something deliberately, like when you stiffen a package with cardboard to protect it in the mail. You can also stiffen in reaction to something: "The spooky creaking sounds upstairs made us stiffen in terror." The earliest sense of this verb was "make steadfast," from a now-obsolete meaning of stiff, "gain strength."

Keep Reading on Vocabulary.com

Vocabulary lists containing stiffen

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.

I saw Henry V. He knew how to make a speech: "Then imitate the action of the tiger;/ Stiffen the sinews, summon up the blood."

From Time Magazine Archive

Stiffen yourself up!' says Steel; and Redmond's voice cracked in the middle as he answered him: 'I'm feeling mighty sick.

From The Mistress of Bonaventure by Bindloss, Harold

Stiffen your lip and stand, my son; We'll take this bloomin' circus on:    Ball-cartridge load!

From Songs of Action by Doyle, Arthur Conan, Sir

Stiffen up those wrists a bit—don't let 'em flop so.

From Fore! by Loan, Charles Emmett Van

Stiffen with flour and knead about 25 minutes; place the dough in a covered bowl in a warm place to rise about two hours and when well-risen and light, knead and stand one hour.

From Mary at the Farm and Book of Recipes Compiled during Her Visit among the "Pennsylvania Germans" by Thomas, Edith