extemporaneous
/ɪkˌstɛmpəˈreɪniəs/
adjective
- Spoken or done without preparation or planning; impromptu.
- Her extemporaneous remarks at the meeting surprised everyone with their clarity.
- The teacher gave an extemporaneous speech when the guest speaker didn't show up.
- He is known for his ability to deliver extemporaneous comedy routines that feel perfectly timed.
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