We, being French, have savvy (4)
I believe the answer is:
nous
'savvy' is the definition.
(I've seen this before)
'we being french' is the wordplay.
I cannot quite understand how this works, but
'we' could be 'us' and 'us' is found within the answer.
The remaining letters 'no' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'have' is the link.
Can you help me to learn more?
(Other definitions for nous that I've seen before include "Native wit" , "we recognised in Nancy" , "Common sense (sl.)" , "Informal common sense" , "Common sense: mind or reason" .)