IPA: /ˈstɪfənɪŋ/
KK: /ˈstɪfənɪŋ/
A material or feature that increases the stiffness of an object, making it less flexible.
The stiffening in the fabric helped the dress maintain its shape.
To make something firm or rigid, often by increasing its strength or resistance.
The cold weather caused the metal to stiffen, making it harder to bend.
Past: stiffened
Past Participle: stiffened
Stiffening → It is formed from "stiff" (from Old English "stif", meaning rigid or firm) and "-ening" (a suffix indicating the process of becoming). The word "stiffening" refers to the process of becoming stiff or rigid.
Think of something becoming 'rigid' ('stiff') through a process ('-ening') — that's what stiffening means.
No commonly confused words.