Definition of Stiffness

Noun: stiffness stif-nus

The physical property of being inflexible and hard to bend
The property of moving with pain or difficulty
"he awoke with a painful stiffness in his neck"
Firm resoluteness in purpose, opinion or action
"a charming host without any touch of stiffness or pomposity"
The inelegance of someone stiff and unrelaxed (as by embarrassment)
- awkwardness, clumsiness, gracelessness
Excessive sternness
"stiffness of character";
- severity, severeness, harshness, rigor [US], rigour [Brit, Cdn], rigorousness, rigourousness [Brit, non-standard], inclemency, hardness