Intractable

I am too rude—too rough—too intractable to deal with any being so soft and gentle as you are.

Determining the shortest path through any arbitrary set of points is an intractable problem.

That morning, I began to feel the intractable pain of a migraine. Frustrated, I cancelled my plans, closed the curtains, and lay in bed the rest of the day waiting for it to pass.

Quantum computers might one day have the ability to push computational boundaries, allowing us to solve problems that have been intractable thus far, such as integer factorization, which is important for encryption.

And I cannot but expect that this will repeatedly lead to the discovery that an initially intractable problem can be factored after all.

Work—bureaucratic work in particular—poses a series of intractable dilemmas that often demand compromises with traditional moral beliefs.