This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
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v. To do or perform (something) without prior preparation or practice: extemporized an acceptance speech.

verb-intransitive. To perform an act or utter something in an impromptu manner; improvise: "bravely demonstrating his ability to extemporize intelligently” ( William Safire).

v. To do something, particularly to perform or speak, without prior planning or thought; to act in an impromptu manner; to improvise.

v. To do, create, improvise, adapt, or devise in an impromptu or spontaneous manner.

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

v. To do, make, or utter extempore or off-hand; to prepare in great haste, under urgent necessity, or with scanty or unsuitable materials

To make or provide for a sudden and unexpected occasion; prepare in haste with the means within one's reach: as, to extemporize a speech or a dinner; to extemporize a couch or a shelter.

Specifically To compose without premeditation on a special occasion: as, he extemporized a brilliant accompaniment.

To speak extempore; speak without previous study or preparation; discourse without notes or written draft.

To sing, or play on an instrument, composing the music as it proceeds; improvise. See improvise.

Also spelled extemporise.

v. perform without preparation

v. manage in a makeshift way; do with whatever is at hand

"I'm discovering that I like Danilaw a lot -- he's got the ability to extemporize political speeches like a trained skald and he's also pretty funny."

extemporized    extemporizes    extemporizing   

execute    do    perform    contend    deal    make do    cope    get by    manage    grapple   

extemporizing-machine    off the cuff    play it by ear    off the top of one's head   

extemporaneous    extemporization    extempore    extemporisation   

extemporized    extemporizing   

improvise    composer