Synonyms of extemporary in English:

extemporary


See definition of extemporary

adjective

1‘a member of the audience made notes of his extemporaneous address’

SYNONYMS
extempore, extemporaneous, impromptu, spontaneous, unscripted, ad lib, on-the-spot
improvised, improvisatory, unrehearsed, unplanned, unprepared, unarranged, unpremeditated
makeshift, thrown together, cobbled together
informal off-the-cuff, spur-of-the-moment, off the top of one's head
ANTONYMS

rehearsed, planned