rigidity

rigidity is a   Noun

Definition:

[1] The quality or state of being rigid; want of pliability; the quality of resisting change of from; the amount of resistance with which a body opposes change of form; -- opposed to flexibility, ductility, malleability, and softness.

[2] Stiffness of appearance or manner; want of ease or elegance. Sir H. Wotton.

[3] Severity; rigor. [Obs. orR.] Bp. Burnet.

Synonyms: