A significant flaw or defect in a system or process that prevents it from functioning as intended.

A critical failure that cannot be rectified.

एक महत्वपूर्ण विफलता जिसे ठीक नहीं किया जा सकता।

English Usage: After the unrecoverable error, all data was lost.

Hindi Usage: अनकैद गलती के बाद, सभी डेटा खो गया।