improvisator
im·prov·i·sa·tor
(ĭm-prŏv′ĭ-zā′tər)n.
One who improvises.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
improvisator
(ɪmˈprɒvɪˌzeɪtə)n
a person who improvises
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
im•prov•i•sa•tor
(ɪmˈprɒv əˌzeɪ tər, ˈɪm prə və-)n.
a person who improvises.
[1785–95; compare Italian improvvisatore]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.