stiffness

noun

1
excessive sternness
severity of character
the harshness of his punishment was inhuman
2
the inelegance of someone stiff and unrelaxed (as by embarrassment)
3
firm resoluteness in purpose or opinion or action
a charming host without any touch of stiffness or pomposity
4
the property of moving with pain or difficulty
he awoke with a painful stiffness in his neck
5
the physical property of being inflexible and hard to bend

Also useful for “stiffness”:Unscrambler— Rearrange the letters in “stiffness”