rigidify

The first followed the invention of the cotton gin, which gave birth to a “rigidified oligarchy that eventually challenged the power of the nation itself.”

Normal people seldom appear in these stories, and the German Democratic Republic has long since rigidified into a historical caricature.

Now the two-party system has rigidified and ossified.

"This thing has rigidified out here," Wilmore radioed to flight controllers in Houston.

“It’s going to rigidify the already powerful racist tendencies in Israeli society,” she worried.