Synonyms of the word 
EXTEMPORARILY → EXTEMPORANEOUSLY - EXTEMPORE
extemporarily
- adv. In an extemporary manner.
extemporaneously
- adv. In an extemporaneous manner; without prior preparation or planning.
extempore
- adj. carried out with no preparation; impromptu.
- adv. without preparation; extemporaneously.
- n. Something improvised.
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