extempore

without previous thought or preparation 
Found on http://www.graduateshotline.com/list.html

Extempore

An improvised poem e.g. Extempore Effusion upon the Death of James Hogg by Wordsworth. See also impromptu.
Found on http://www.poetsgraves.co.uk/glossary_of_poetic_terms.htm

Extempore

Ex·tem'po·re adverb [ Latin ex out + tempus , temporis , time. See Temporal .] Without previous study or meditation; without preparation; on the spur of the moment; suddenly; extemporaneously; as, to write or speak extempore . Shak. -- ...
Found on http://www.encyclo.co.uk/webster/E/94

Extempore

• (adv.) Without previous study or meditation; without preparation; on the spur of the moment; suddenly; extemporaneously; as, to write or speak extempore. • (n.) Speaking or writing done extempore. • (a.) Done or performed extempore.
Found on http://thinkexist.com/dictionary/meaning/extempore/

extempore

extempore With little or no preparation.; literally 'out of the moment'.
Found on http://www.wordinfo.info/words/index/info/view_unit/2105/

extempore

without preparation; offhand
Found on http://phrontistery.info/e.html
No exact match found