rigidity

Short definition from Wiktionary

Noun

1. 1
   The quality or state of being rigid; lack of pliability; the quality of resisting change of physical shape
2. 2
   The amount of resistance with which a body opposes change of form.
3. 3
   Stiffness of appearance or manner; want of ease or elegance.
4. 4
   stickiness (of prices/wages etc.). Describing the tendency of prices and money wages to adjust to changes in the economy with a certain delay.