What's the plural form of incompossibility? Here's the word you're looking for.
Answer
The noun incompossibility can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be incompossibility.
However, in more specific contexts, the plural form can also be incompossibilities e.g. in reference to various types of incompossibilities
or a collection of incompossibilities.
Examples
Griffin argues that incompossibility is necessary and extrinsically grounded in the essential attributes of God since God cannot actualize incompossible substances.
Incompossibility, it will be seen, is only incompatibility let loose.
