1. in a way that cannot be overcome or surpassed; impossibly

Examples

• The mountain climbers faced insurmountably difficult conditions at high altitude.
• The cost of the project seemed insurmountably high for the small nonprofit.
• Despite her talent, she found the language barrier insurmountably frustrating.
• The two countries had insurmountably different political ideologies.
• The evidence against him appeared insurmountably strong.
• They believed the gap between rich and poor had become insurmountably wide.