Extemporaneously Synonyms

Without physical restriction
(Adjective)
Synonyms:
  1. without preparation
  2. spontaneously
  3. on-the-spur-of-the-moment
  4. off-the-top-of-one-s-head
Without prior preparation
(Adverb)
Synonyms:
  1. extemporarily
  2. extempore