1. the philosophical doctrine that certainty is impossible and that probability is sufficient as a basis for belief and action
Usage: philosophy
2. a system of moral theology holding that when the lawfulness of an action is doubtful, it is permissible to follow a solidly probable opinion favoring liberty
Usage: theology; ethics

Examples

• The philosopher embraced probabilism, arguing that absolute certainty was unattainable.
• Probabilism suggests we should act on reasonable probability rather than wait for certainty.
• In moral theology, probabilism allows following probable opinions when the law is unclear.
• The debate between probabilism and rigorism divided Catholic theologians for centuries.
• Modern decision theory has roots in philosophical probabilism.
• Probabilism influenced how scientists approach uncertainty in their research.