A performance or speech done without preparation

An unplanned or spontaneous event

अनियोजित या स्वाभाविक घटना

English Usage: Their meeting was an impromptu gathering of friends.

Hindi Usage: उनकी बैठक दोस्तों का एक अनियोजित जमावड़ा था।

Done without being planned or rehearsed

Created or performed spontaneously

स्वाभाविक रूप से बनाया या प्रस्तुत किया गया

English Usage: The band played an impromptu set when their scheduled performance was canceled.

Hindi Usage: जब उनका निर्धारित प्रदर्शन रद्द हुआ, तो बैंड ने एक स्वाभाविक सेट खेला।