A sudden, uncontrollable fear or anxiety, often causing wildly unthinking behavior.

आतंक

English Usage: Her panic was evident as she realized she had lost her wallet.

Hindi Usage: उसे आतंक स्पष्ट था जब उसे एहसास हुआ कि उसने अपना बटुआ खो दिया है।

To feel or show sudden, uncontrollable fear or anxiety.

घबराना

English Usage: Don't panic; everything will be fine.

Hindi Usage: घबराओ मत; सब ठीक होगा।