impossibility
🇺🇸
/ɪmˌpɑːsəˈbɪləti/
🇬🇧
/ɪmˌpɒsəˈbɪləti/
something that cannot happen or be done
The impossibility of traveling faster than light is a scientific fact.
a thing that cannot happen or be done
Finding a perfect solution to this problem is a near impossibility.