Ex*tem"po*rize (?), v. i. [imp. & p. p. Extemporized(?); p. pr. & vb. n. Extemporizing(?).] To speak extempore; especially, to discourse without special preparation; to make an offhand address.

Ex*tem"po*rize, v. t. 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.

Pitt, of whom it was said that he could extemporize a Queen's speech

• to do something without thinking it through beforehand