Rigidity

This year, investigators in New York and Australia began a clinical trial involving a therapy to treat patients with Parkinson's disease, a neuro-degenerative illness that causes severe tremors, muscle rigidity and poor coordination.

That school is known for its almost military-like rigidity.

moral rigidity

The metal’s rigidity made it hard to bend.

She disliked the rigidity of the rules.

For rigidity, two bulkheads are provided which are welded to the sides and underframe and which separate the cabs from the engine room.

structural rigidity

speak with excessive rigidity