1. the act or practice of speaking, performing, or composing something without prior preparation or planning
Usage: British spelling; American equivalent is 'extemporization'; commonly used in music, theater, and public speaking contexts

Examples

• The jazz musician's extemporisation delighted the audience with its creative energy.
• Her extemporisation during the presentation showed quick thinking when the slides failed.
• The actor's extemporisation saved the scene when he forgot his lines.
• Extemporisation is a valuable skill for public speakers who must adapt to unexpected situations.
• The comedian relied on extemporisation to respond to hecklers in the crowd.
• In classical music, extemporisation was once a common practice among composers and performers.