Decisiveness

(always negative) ‌to refuse to make even a slightest change to one's position, decision, etc.

During the negotiation, he wouldn't give an inch on the price.

to refuse to change one's opinion or decision regarding something

The doctor told the patient to sit tight and wait for the test results.

used to say that something is completely decided and cannot be changed

After submitting the resignation letter, he knew the die was cast and there was no turning back from his decision to leave the company.

to refuse to change one's opinions, behaviors, habits, etc.

Despite the advancements in technology, my grandfather remains set in his ways and prefers to stick to his traditional methods.

to act quickly in order to use an opportunity

Realizing the limited availability of discounted tickets, she decided to take time by the forelock and purchase them immediately.

used to describe a situation that has almost no chance of changing as it is already decided

The company's hiring process is cut and dried, with clear criteria and predetermined interview questions.

used to express a strong refusal to do something, regardless of the great reward or incentive offered

I wouldn't go skydiving, not for all the tea in China—I have a fear of heights.

to fully commit to a course of action without any intention of retreat or hesitation

Let's throw away the scabbard and give our all to this project, leaving no room for doubt or retreat!