English definition of “improvise”
/ˈɪmprəvaɪz/ verb [I, T]
MAKE › to make or do something without any preparation, using only the things that are available: For a football, we improvised with some rolled-up socks.
PERFORM › to play music or say words that you are inventing, not reading or remembering: The show is not scripted - the actors have to improvise. improvisation
/ˌɪmprəvaɪˈzeɪʃən/ noun [C, U]