Probabilist
Pronunciation : Prob"a*bil*ist
Part of Speech : n.
Etymology : [Cf. F. probabilists.]
Definition : 1. One who maintains that certainty is impossible, and that probability alone is to govern our faith and actions.
2. (Casuistry)
Defn: One who maintains that a man may do that which has a probability of being right, or which is inculcated by teachers of authority, although other opinions may seem to him still more probable.
Source : Webster's Unabridged Dictionary, 1913