Opportunity in Germany? Enthusiastic comment about that (6)
I believe the answer is:
window
'opportunity' is the definition.
(I've seen this before)
'in germany? enthusiastic comment about that' is the wordplay.
'germany?' becomes 'D' (vehicle registration code for Deutschland).
'enthusiastic comment' becomes 'wow' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'about that' indicates putting letters inside.
'in'+'d'='ind'
'ind' placed into 'wow' is 'WINDOW'.
Can you help me to learn more?
(Other definitions for window that I've seen before include "time still available" , "Glassy area" , "Interval for action" , "Eg, oriel or fanlight" , "Glazed opening" .)