noun

stiffness

rigidity, firmness, formality

He felt some stiffness in his joints.

He felt some stiffness in his joints.

The stiffness of the rules was unpopular.

The stiffness of the rules was unpopular.

stiffness in ((sth.)) rigidity in a body part He felt some stiffness in his joints.

the stiffness of ((sth.)) the rigidity or formality of something The stiffness of the rules was unpopular.

Synonyms: rigidity, inflexibility; Antonyms: flexibility, suppleness

From the adjective 'stiff' plus the noun-forming suffix '-ness'.

This word simply adds '-ness' to 'stiff' to turn the adjective into a noun describing the quality of being stiff.

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