extemporize

UK: /ɪkˈstɛmpəraɪz/ US: /ɪkˈstɛmpəˌraɪz/ ,(ik stem′pə rīz′)

Inflections of 'extemporize' (v): (⇒ conjugate)

extemporizes

v 3rd person singular (US & UK)

extemporizing

v pres p (US & UK)

extemporized

v past (US & UK)

extemporized

v past p (US & UK)

WordReference Random House Learner's Dictionary of American English © 2025

ex•tem•po•rize /ɪkˈstɛmpəˌraɪz/   v. [no object] , -rized, -riz•ing. 

1. to speak, perform, or do extemporaneously.

See -temp-.

WordReference Random House Unabridged Dictionary of American English © 2025

ex•tem•po•rize  (ik stem′pə rīz′), v., -rized, -riz•ing. 
v.i. 

1. to speak extemporaneously:
   He can extemporize on any of a number of subjects.
2. Music and Dance to sing, or play on an instrument, composing the music as one proceeds;
   improvise.
3. to do or manage something in a makeshift way.

v.t. 

4. to make or devise extempore.
5. Music and Dance to compose offhand* improvise.

Also,[esp. Brit.,] ex•tem′po•rise′. 

• extempore + -ize 1635–45

ex•tem′po•ri•za′tion, n. 
ex•tem′po•riz′er, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

extemporize, extemporise / ɪkˈstɛmpəˌraɪz/ verb

1. to perform, speak, or compose (an act, speech, piece of music, etc) without planning or preparation
2. to use (a temporary solution) for an immediate need; improvise

exˌtemporiˈzation, exˌtemporiˈsation noun

exˈtempoˌrizer, exˈtempoˌriser noun