Ordinary Greek character essentially incensing continental fellow (7)
I believe the answer is:
mundane
'ordinary' is the definition.
(similar in meaning)
'greek character essentially incensing continental fellow' is the wordplay.
'greek character' becomes 'mu' (letter from the Greek alphabet).
'essentially' indicates the central letters.
'continental fellow' becomes 'dane' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
The centre of 'incensing' is 'n'.
'mu'+'n'+'dane'='MUNDANE'
Can you help me to learn more?
(Other definitions for mundane that I've seen before include "Drab" , "Everyday, humdrum" , "Banal; earthly" , "Worldly, perhaps dull" , "Boring" .)