improvisar bedeutet auf Englisch

ad lib▼(to perform without script)
verb
[UK: ˈæd.ˈlɪb] [US: ˈæd.ˈlɪb]

ad-lib (ad lib) [ad-libbed, ad-libbed, ad-libbing, ad-libs]▼(to improvise)
verb
[UK: ˌæd.ˈlɪb] [US: ˈæd.ˈlɪb]

contrive [contrived, contriving, contrives]▼(To invent, to make devices; to form designs especially by improvisation)
verb
[UK: kən.ˈtraɪv] [US: kən.ˈtraɪv]

improvise [improvised, improvising, improvises]▼(to make something up as one goes on)
verb
[UK: ˈɪm.prə.vaɪz] [US: ˈɪm.prə.ˌvaɪz]John improvised. = John improvisó.

wing [winged, winging, wings]▼(to be extemporaneous)
verb
[UK: wɪŋ] [US: ˈwɪŋ]