The word "extemporise" is correct and usable in written English.
It is usually used in a more formal context to mean to improvise or speak without preparation. You can use it when you need to describe a spontaneous, unprepared action. Example sentence: The actor quickly extemporised a response when the line he was supposed to say was forgotten.
But as Japan tightens its belt, his irritable defence of how he likes to unwind has grated.As for the eventual date for an election, Mr Aso appears content to extemporise.
The king gave Bach a theme on which to extemporise a three-voice fugue on the spot, which he did.
Sadly neither of them have the chops to extemporise.
Introduced as "rather a fine poet" – who knew? – Hall tosses her mane and simpers her way through a schoolgirlishly random list of eccentric non-sequiturs ("Do you think we are more altruistic?" "So, you went to Cambridge?") which even De Botton, a man apparently programmed from birth to extemporise on stage, struggles to rescue from absurdity.
As long as domestic fundamentals are in place, you can extemporise with confidence, and that includes the soppy stuff.
The centres exceeded the coach's expectations with their ferocity in defence and their power, grace, adaptability and their ability to extemporise in attack.
So, it extemporised, any delay must be settled by agreement between the government and the election commission.
After a lifetime in a brutal football world, Neville is cautious about extemporising on too many aspects of ethical living.
I have always found it difficult to believe that anything Boris Johnson does or says is as extemporised (to borrow his lexicon) as he would have us think.
If the purity of sound was impressive, so too was the fervour and invention in Gringolts' cadenzas, a dazzling amalgam of historically informed bowing and extemporising.
When she was 10, Alice joined a boating trip up the Isis, during which he extemporised a subterranean yarn about her, with himself as the Dodo.
