stiffening

The stiffening of the dough is essential for making bread.

He felt a stiffening in his muscles after the intense workout.

The stiffening of regulations aims to improve safety standards.

She noticed a stiffening in her joints as she aged.

The stiffening of penalties for traffic violations is meant to deter reckless driving.

The stiffening breeze signaled an approaching storm.

The stiffening competition in the market led to innovative product designs.

His stiffening resolve helped him overcome the challenges he faced.

The stiffening of his attitude made it difficult to negotiate with him.

The stiffening of her expression indicated her disapproval.