WordReference Random House Unabridged Dictionary of American English © 2026
prob•a•bi•lism
(prob′ə bə liz′əm),USA pronunciation n.
prob′a•bi•list, n., adj.
- Philosophythe doctrine, introduced by the Skeptics, that certainty is impossible and that probability suffices to govern faith and practice.
- Religion[Rom. Cath. Theol.]a theory that in cases of doubt as to the lawfulness of an action, it is permissible to follow a sound opinion favoring its lawfulness. Cf. equiprobabilism.
- French probabilisme. See probable, -ism
- 1835–45
'probabilism' also found in these entries (note: many are not synonyms or translations):