EXTEMPORIZE
improvise, improvize, ad-lib, extemporize, extemporise
(verb) perform without preparation; “he extemporized a speech at the wedding”
improvise, extemporize
(verb) manage in a makeshift way; do with whatever is at hand; “after the hurricane destroyed our house, we had to improvise for weeks”
Source: WordNet® 3.1
Verb
extemporize (third-person singular simple present extemporizes, present participle extemporizing, simple past and past participle extemporized)
(intransitive) To do something, particularly to perform or speak, without prior planning or thought; to act in an impromptu manner; to improvise.
(transitive) To do, create, improvise, adapt, or devise in an impromptu or spontaneous manner.
Synonyms
• (intransitive): improvise, think on one's feet
• (transitive): devise, improvise
Source: Wiktionary
Ex*tem"po*rize, v. i. [imp. & p. p. Extemporized(); p. pr. & vb. n.
Extemporizing().]
Definition: To speak extempore; especially, to discourse without special
preparation; to make an offhand address.
Ex*tem"po*rize, v. t.
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition