Extemporanoeus or Extemporaneous: How To spell?

The word Extemporanoeus is misspelled against Extemporaneous, an adjective meaning "Composed, performed, or uttered on the spur of the moment, or without previous study; unpremeditated; off-hand; extempore; extemporary; as, an extemporaneous address or production."

Word contains consecutive vowels 'EO' in between alphabets extemporan & us is misspelled as 'OE'
Wrong Spelling:  extemporan-oe-us 
Correct Spelling:  extemporan-eo-us 
Check more misspelled words of Extemporaneous to spell it correct.