Rare/archaic use as an adverb meaning "extempore".
Переводы
She answered the judge's question extemporary, without consulting her notes.
Elle a répondu de manière improvisée à la question du juge, sans consulter ses notes.
spontanémentQuand l'idée est formulée sans préparation préalable. Определения
In an extemporary manner; spontaneously, without advance preparation. She answered the judge's question extemporary, without consulting her notes.