insurmountable

Definition

Incapable of being passed over, surmounted, or overcome; insuperable

Etymology

From in- + surmountable.

Example Sentences

• "Getting everybody to agree proved to be an insurmountable difficulty."
• "Overcoming Japan’s demographic crisis has proved insurmountable for occupants of the Kantei – the prime minister’s office – long before Kishida moved in last autumn."