Simple Definition of stiffen
: to stop moving and become completely still especially because of fear, anger, etc.
: to become painful to move or use
: to become more severe or strong or to make (something) more severe or strong
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.
First Known Use of stiffen
STIFFEN Defined for Kids
Definition of stiffen for Students
1 : to make or become stiff or stiffer <The paper stiffened as it dried.>
2 : to become tense and still <He stiffened with suspicion.>
Seen and Heard
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