extemporary
Concise Oxford English Dictionary © 2008 Oxford University Press:
extemporary /ɪkˈstɛmp(ə)(rə)ri, ɛk-/
▶adjective spoken or done without preparation.
– derivatives
extemporarily adverb,
extemporariness noun.
extemporarily adverb,
extemporariness noun.
'extemporary' also found in these Oxford entries:

