extemporize

• There is no way to mitigate or extemporize these facts. —  TPMCafe
• Her performance with Charlie Gibson on ABC News, however, did not inspire confidence; she hewed tightly to a script and buzzwords, and seemed afraid to extemporize (which I interpreted as either over-programming, or a lack of internal beliefs to guide her answers). —  Yet Another Blog about Money
• Well, let's just skip the weirdness of this too-much-information moment and get to Dylan's assignment: stand up in front of the class and extemporize about good subjects for a magazine article. —  Latest Articles
• What this means is that you have this amazingly dynamic, expressive language at your fingertips, and you're free to extemporize as you see fit, creating your own mini languages in a flash. —  Bruce Williams
• You will not be able to extemporize good thinking unless you have been in the habit of thinking and feeding your mind with abundant and nourishing food. —  Recently Uploaded Slideshows

Roget's II: The New Thesaurus

Allen's Synonyms and Antonyms