extemporise
ex-tem-po-rise
verb
To perform or produce something without prior preparation or rehearsal.
"He had to extemporise a quick speech."
Thesaurus
Synonyms: improvize, extemporize, ad-lib, improvise
ex-tem-po-rise
To perform or produce something without prior preparation or rehearsal.
"He had to extemporise a quick speech."
Synonyms: improvize, extemporize, ad-lib, improvise