Grand manner gives god pain (7)
I believe the answer is:
panache
'grand manner' is the definition.
(I've seen this before)
'god pain' is the wordplay.
'god' becomes 'Pan' (Pan is an example).
'pain' becomes 'ache' (ache is a kind of pain).
'pan'+'ache'='PANACHE'
'gives' acts as a link.
(Other definitions for panache that I've seen before include "Flamboyant sense of style" , "Flamboyant self-assurance" , "Sense of style, swagger" , "Dash and verve" , "Flamboyance - style" .)