Definition of extemporaneous adjective from the Oxford Advanced American Dictionary

     

    extemporaneous

     adjective
    adjective
    NAmE//ɪkˌstɛmpəˈreɪniəs//
     
     
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  1. 1spoken or done without any previous thought or preparation synonym impromptu
  2. 2 extemporaneous speaking
extemporaneouslyadverb
 
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