Refers to a sudden, violent, and illegal seizure of power from a government.

In informal contexts, it can refer to an achievement or success that is unexpected or impressive.

अप्रत्याशित सफलता

English Usage: Winning the award was quite a coup for the young artist.

Hindi Usage: पुरस्कार जीतना युवा कलाकार के लिए एक अपेक्षित सफलता थी।