Intellectual, say, taken with German capital (7)
I believe the answer is:
egghead
'intellectual' is the definition.
(egghead is a kind of intellectual)
'say taken with german capital' is the wordplay.
'say' becomes 'eg'.
'taken with' says to put letters next to each other.
'german' becomes 'g' (abbreviation).
'capital' becomes 'head'.
'eg'+'g'+'head'='EGGHEAD'
(Other definitions for egghead that I've seen before include "Intellectual person" , "brain" , "where soldiers may take a dip?" , "Ovoid-shaped intellectual" , "Intellectual, studious academic" .)