Rigorous

The top engineer put the car through a series of rigorous tests.

The thief or swindler who has gained great wealth by his delinquency has a better chance than the small thief of escaping the rigorous penalty of the law.

Angry at Leif Ericson for stealing his thunder 500 years before, Christopher Columbus once wrote a rigorous mathematical proof that showed how Ericson had never actually been to North America. Unfortunately, the proof was too difficult for even the brightest mathematicians to understand.

The argument is rigorous and coherent but ultimately unconvincing.

On the grammar of Esperanto Claude Piron noted "It's very rigorous and requires discipline -- let us just think about the n-ending -- but within the framework of that rigor it gives us so much freedom!"

Poetry is a form of mathematics, a highly rigorous relationship with words.

Many of America’s international competitors offer students a more rigorous and relevant education in their middle and high school years.

As I've already mentioned before, after a rigorous investigation, we have found nothing wrong with our company's management.

Sami followed a very rigorous system.

Rigorous controls also exist for turkey production at Butterball Turkey LLC, which says the regulations are ingrained in how they produce food.