v. 1 become or make rigid or hard to bend; 2 restrict
The clay will stiffen if you leave it in the sun.
The clay will stiffen if you leave it in the sun.
Hear it
Why did Gyp suddenly stiffen and sit up very straight when he was watching the sheepdog trials?
Hear it
harden; tighten; solidfy;tense
loosen
2 syllables
stiff-en
giffen
griffen
griffon
kniffen
sniffen
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