A major subdivision, however, will be subject to more rigorous rules.

To prevent this, elevators have very rigorous rules against smoking or any other open flame.

However, its rigorous rules of membership brought about its early demise.

But the current bill would create more rigorous rules and enforcement than ever before.

A more rigorous rule under consideration would preclude the same person from serving as board chairman and chief executive.

The production of the cheese has to follow very rigorous rules.

The quiet came back then but the rites were celebrated following rigorous rules.

He pointed out, too, that the Met had more rigorous rules for acquisitions.

As usual, Galileo was trying to gain an advantage for himself in a game that did not have rigorous rules.

The company keeps a rigorous rule that the wastewater have to be the second grade of feed water.