rigor|rigour

他突然打了个寒战，知道自己要发烧了。

He experienced a sudden ___rigor and realized a fever was coming.

学校以严格的纪律标准执行校规。

The school enforces its rules with great ___rigour.

为了保证准确性，实验必须严格按照科学的严谨性进行。

The experiment must be conducted with scientific ___rigor to ensure accuracy.

这所学校的纪律以严格著称。

The school's discipline is known for its ___rigor.

她以严谨的态度完成了这项复杂的实验。

She completed the complex experiment with great ___rigour.