1. in a manner arising from an unknown cause or occurring without an identifiable external trigger, especially in medical contexts
Usage: medical/technical term; commonly used in clinical and scientific contexts

Examples

• The patient developed the condition idiopathically, with no clear environmental or genetic factors.
• The disease appeared idiopathically in otherwise healthy individuals.
• Idiopathically occurring seizures can be difficult to treat without knowing the underlying cause.
• The syndrome manifested idiopathically in several unrelated patients.
• Doctors determined the inflammation arose idiopathically rather than from infection or injury.