Improvise

·vt To bring about, arrange, or make, on a sudden, or without previous preparation.

II. Improvise ·vt To invent, or provide, offhand, or on the spur of the moment; as, he improvised a hammer out of a stone.

III. Improvise ·vi To produce or render extemporaneous compositions, especially in verse or in music, without previous preparation; hence, to do anything offhand.

IV. Improvise ·vt To compose, recite, or sing extemporaneously, especially in verse; to Extemporize; also, to play upon an instrument, or to act, extemporaneously.