The word Extemporanen is misspelled against Extemporanean, an adjective meaning "Extemporaneous."
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Extemporanean has vowels 'ea' together mispronounced as 'e'
Word contains consecutive vowels 'EA' in between alphabets extemporan & n is misspelled as 'E'
Wrong Spelling:  extemporan-e-n 
Correct Spelling:  extemporan-ea-n 
Find more incorrect spellings of Extemporanean to spell right way.