His parents sent him to school in a Marist college where he underwent an extremely rigid education.

The extremely rigid and severe provisions of this instrument terrified the people.

"However, I would suggest that part of being generous in the past means that they will be extremely rigid going forward."

Cars are built to an extremely rigid design and feature strong steel guards around almost the entire car.

Extremely rigid in beliefs, and certain that only they know the truth and the right.

I gather the culture evolved to an extremely rigid form during the generations born on shipboard.

He is extremely rigid in his views on his religion, not wanting to do anything to go against it whatsoever.

The third point I should like to mention is the extremely rigid nature of the principles which determine whether or not subsidies can be granted.

French administrative divisions, however, have remained extremely rigid and unchanged.