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English definition of “extemporize”


verb [I] formal (UK usually extemporise)     /ɪkˈstem.pər.aɪz/ US  /-pɚ.aɪz/
to speak or perform without any preparation or thought : I'd lost my notes and had to extemporize.Lecturing and addressingNot expected or planned
(Definition of extemporize verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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