v. 25B6; verb IMPROVISE, ad lib, play it by ear, think on one's feet, do something off the top of one's head; informal busk it, wing it, do something off the cuff.
EXTEMPORIZE
Meaning of EXTEMPORIZE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012