1. in a way that is impossible to imagine or believe; to an unimaginable degree

Examples

• The universe is inconceivably vast.
• She was inconceivably wealthy, owning properties on every continent.
• The ancient pyramid was built with inconceivably precise measurements.
• It seems inconceivably difficult to solve this mathematical problem.
• The storm caused inconceivably severe damage to the coastal town.
• He was inconceivably lucky to survive the accident unharmed.