extemporizer


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ex·tem·po·rize

 (ĭk-stĕm′pə-rīz′)
v. ex·tem·po·rized, ex·tem·po·riz·ing, ex·tem·po·riz·es
v.tr.
To do or perform (something) without prior preparation or practice: extemporized an acceptance speech.
v.intr.
To perform an act or utter something in an impromptu manner; improvise: "[When] the house lights dimmed, she could no longer read what she had written and was forced to extemporize" (Dale Peterson).

[From extempore.]

ex·tem′po·ri·za′tion (-pər-ĭ-zā′shən) n.
ex·tem′po·riz′er n.
References in periodicals archive ?
In 1925, the same year as Gatsby's publication, Edmund Wilson wrote that "Fitzgerald is a dazzling extemporizer but his stories have a way of petering out: He seems never to have planned them thoroughly or to have thought them out from the beginning" (82-3).
But when the Great Extemporizer delivered the speech, he left out the second half of the line.