extempore

/ɪkˈstɛmpəri/
adjective
  1. Spoken or done without preparation; impromptu.
    • The professor's extempore lecture was surprisingly well-organized.
    • Her extempore remarks at the dinner party were both witty and kind.
    • They put on an extempore play for the school assembly.
Antonyms
adverb
  1. Without preparation; impromptu.
    • He spoke extempore at the conference, drawing on his years of experience.
    • The band played extempore, jamming on a new melody.
    • She answered the questions extempore, showing her deep knowledge of the subject.
Synonyms
Antonyms
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