негибкий in English:

rigidly defining

Even though daytime processing typically operates on small batches and lacks rigid processing windows, develop your type of daytime batch processing as a custom work queue

/stiff/ A working day schedule that is not rigid

Laws, rules, or systems that are rigid cannot be changed or varied, and are therefore considered to be rather severe.

‘Her mind was completely void of emotions and her body was rigid

I was rigid with (= stiff and unable to move because of) fear.

Rigid wheels give sufficient stability to a low-speed vehicle steered by outside forces.

We were disappointed that they insisted on such a rigid interpretation of the rules.

Our education system in Europe tends to be competitive and rigid.

We are at the end of the planning period and so the budget is particularly rigid.

The tectonic plates are rigid segments that move in relation to one another at one of three typer of plate boundaries.

For a while he tried to get along with social services, but they were too rigid.

Creativity and innovation are no longer restricted to rigid institutional schemes.

The school has rigid rules against using mobile phones in the classroom.

In this picture you look very rigid. You should have at least smile.

inflexible attitudes towards change

The rule is utterly inflexible.