1. in a way that cannot be overcome or surmounted
Usage: formal

Examples

• The mountain peak seemed insuperably high to the exhausted climbers.
• She found herself insuperably drawn to the mysterious stranger.
• The technical challenges proved insuperably difficult for the small team.
• His fear of public speaking was insuperably strong.
• The fortress walls appeared insuperably thick and tall.
• The gap between rich and poor had grown insuperably wide.