Definition of "extemporaneously" [extemporaneously]

• In an extemporaneous manner; without prior preparation or planning. (adverb)

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• "True brilliance is being able to communicate brilliantly extemporaneously, which is what Mark Steyn exhibits in this interview."
• "At Digital Music Forum East, Mr Griffin announced that because of a felt-need to be precise he would read a prepared speech rather than speak extemporaneously as is his want."
• "Neither could speak extemporaneously about any subject."