rigid

我觉得这些规则有点过于僵化。

I found the rules a little too ___rigid.

他对传统的固执坚守阻碍了任何有意义的创新。

His ___rigid adherence to tradition prevented any meaningful innovation.

公司僵化的层级制度扼杀了创新。

The company's ___rigid hierarchy stifles innovation.