- to compose and perform or deliver without previous preparation; extemporize: to improvise an acceptance speech.
- to compose, play, recite, or sing (verse, music, etc.) on the spur of the moment.
- to make, provide, or arrange from whatever materials are readily available: We improvised a dinner from yesterday's leftovers.
- to compose, utter, execute, or arrange anything extemporaneously: When the actor forgot his lines he had to improvise.
- to perform or make quickly from materials and sources available, without previous planning
- to perform (a poem, play, piece of music, etc), composing as one goes along
