improvisator

im·prov·i·sa·tor

 (ĭm-prŏv′ĭ-zā′tər)
n.
One who improvises.

improvisator

(ɪmˈprɒvɪˌzeɪtə)
n
a person who improvises

im•prov•i•sa•tor

(ɪmˈprɒv əˌzeɪ tər, ˈɪm prə və-)

n.
a person who improvises.
[1785–95; compare Italian improvvisatore]
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References in periodicals archive ?
David Antin is primarily known as a brilliant talker, a performance artist or improvisator whose talk pieces belong, in the words of Michael Davidson, "somewhere among a standup comedian's rap, a storyteller's fable and a formal lecture.
and The Wreckers all test their comedic chops by appearing in sketches with Jeff and his amazing cast of improvisators.