1. impossible to overcome or surmount; too great or difficult to deal with

Examples

• The team faced insurmountable odds but refused to give up.
• Without proper funding, the project seemed insurmountable.
• She believed that no challenge was truly insurmountable if you worked hard enough.
• The language barrier proved insurmountable for the new immigrant.
• After the injury, climbing the mountain appeared insurmountable.
• The debt had become an insurmountable problem for the small business.