1. To invent, compose, or perform with little or no preparation. 2. 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. 3. To make or provide from available materials: improvised a dinner from what I found in the refrigerator.
INTRANSITIVE VERB:
1. To invent, compose, or perform something extemporaneously. 2. To improvise music. 3. To make do with whatever materials are at hand.
ETYMOLOGY:
French improviser, from Italian improvvisare, from improvviso, unforeseen, from Latin imprvsus : in-, not; see in1 + prvsus, past participle of prvidre, to foresee; see provide.