extemporization

/ɪkˌstɛmpərəˈzeɪʃən/
noun
  1. The act of speaking or performing without preparation or rehearsal.
    • The actor's extemporization added humor to the scene.
    • His extemporization of a poem amazed the class.
    • Extemporization is a valuable skill for public speakers.
  2. Something that is improvised or created on the spot.
    • The pianist's extemporization was both beautiful and unexpected.
    • The comedian's extemporization drew laughter from the crowd.
    • That recipe was an extemporization using whatever was in the fridge.
Antonyms