Origin: Greek suffix -ism
Probabilism has 3 different meanings across 1 category:
a Roman Catholic system of casuistry that when expert opinions differ an actor can follow any solidly probable opinion that he wishes even though some different opinion might be more probable
(philosophy) the doctrine that (since certainty is unattainable) probability is a sufficient basis for belief and action
The doctrine that, in the absence of certainty, probability is the best criterion.