Words similar to unattainable

Example sentences for: unattainable

How can you use “unattainable” in a sentence? Here are some example sentences to help you improve your vocabulary:

The solution to this turns out to be unattainable analytically, since the probability of each rank change is not independent and thus it requires solving integrals for four distributions conditional on two unknowns.
Charges of criminal contempt hinge upon proving beyond a reasonable doubt that there was an intention to deceive, and even Lamberth accepts that such proof is unattainable.
That kind of person somehow seems to be unattainable and in our past.
So no individual article can be criticized for failing to live up to an unattainable standard.
In measuring effectiveness, perfection is unattainable.