To compose, or simultaneously compose and perform, on the spur of the moment and without any preparation; extemporize
The definition of devise is to plan or create by thinking through.
To formulate a scheme or program for the accomplishment, enactment, or attainment of:
To repeat aloud as heard or read; recite
To produce or contrive (something previously unknown) by the use of ingenuity or imagination.
Find another word for extemporizing. In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for extemporizing, like: improvising, ad-libbing, devising, faking, planning, reading, rehearsing and inventing.