* Formal: The comedian's ability to extemporize kept the audience engaged even when technical difficulties delayed the show.
* Informal: I didn't have time to prepare a speech, so I just had to extemporize and hope for the best.
* Creative: The artist extemporized with the paint, letting her emotions guide her brushstrokes.
* Technical: The jazz musician's extemporizing on the saxophone created a unique and improvisational sound.
* Descriptive: The politician's extemporizing on the issue of healthcare was met with both applause and criticism.
Remember: "Extemporizing" often implies improvisation or speaking without preparation.