An outcome that was not planned or foreseen.

An incident that occurs purposely or by design, often with negative implications.

जानबूझकर हुई गलती

English Usage: His actions led to a deliberate mishap that caused chaos at the event.

Hindi Usage: उसके कार्यों ने कार्यक्रम में अराजकता का कारण बनने वाली जानबूझकर हुई गलती की।