1. impossible to search through or examine thoroughly
2. impossible to understand or comprehend; mysterious
Usage: often used in religious or philosophical contexts

Examples

• The ancient library’s unsearchable archives contained thousands of unorganized manuscripts.
• The database was unsearchable without proper indexing software.
• His motives remained unsearchable to even his closest friends.
• The ways of providence are unsearchable to human understanding.
• The dense forest seemed unsearchable in the growing darkness.
• She found God’s wisdom to be unsearchable and beyond human reasoning.