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To invent, compose, or perform with little or no preparation.
(verb-transitive)
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To play or sing (music) extemporaneously, especially by inventing variations on a melody or creating new melodies in accordance with a set progression of chords.
(verb-transitive)
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To make or provide from available materials: improvised a dinner from what I found in the refrigerator.
(verb-transitive)
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To invent, compose, or perform something extemporaneously.
(verb-intransitive)
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To improvise music.
(verb-intransitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.