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' (Greek letter).
'essentially' indicates the central letters.
'continental fellow' becomes 'dane' (I can't justify this - if you can you should believe this answer much more).
The middle 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" .)