Extemporize

Part of speech: verb (v.)

To speak extempore; especially, to discourse without special preparation; to make an offhand address.

Part of speech: verb (v.)

To do, make, or utter extempore or off-hand; to prepare in great haste, under urgent necessity, or with scanty or unsuitable materials; as, to extemporize a dinner, a costume, etc. Themistocles . . . was of all men the best able to extemporize the right thing to be done. Jowett (Thucyd. ). Pitt, of whom it was said that he could extemporize a Queen's speech Lord Campbell.