The Collaborative International Dictionary
Probabiliorist
Probabiliorist \Prob`a*bil"i*o*rist\, n. [From L. probabilior, compar. of probabilis probable.] (Casuistry) One who holds, in opposition to the probabilists, that a man is bound to do that which is most probably right.
Wiktionary
probabiliorist
n. One who holds, in opposition to the probabilists, that a person is bound to do that which is most probably right.