1. failed to achieve the intended result or go according to plan
2. experienced the spontaneous loss of a pregnancy before the fetus could survive independently
Usage: medical

Examples

• The rescue mission miscarried due to bad weather.
• Their carefully laid plans miscarried at the last moment.
• The business venture miscarried after losing key investors.
• She miscarried in her second trimester.
• The doctor explained that many women miscarry in early pregnancy.
• The scheme miscarried when someone leaked information to the press.