Definition of "ad-libbed" []

• Simple past tense and past participle of ad-lib. (verb)

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• "Connery "wanted me to do it first, in case I ad-libbed anything that wasn't in the script he could respond.""
• "In previous projects, he's directed his actors to improvise for hours, sometimes sending them onto London streets in character, then drawing out a story from this trove of ad-libbed material."
• "Mr. Doremus says that much of the film, which was made for less than $500,000, was ad-libbed, based on a 50-page outline that contained subtext, plot points and objectives for each scene."