Swagger from upcoming lawyer with excellent case (7)
I believe the answer is:
bravado
'swagger from upcoming lawyer' is the definition.
'bravado' can be an answer for 'swagger' (I've seen this before). I'm not sure about the 'from upcoming lawyer' bit.
'excellent case' is the wordplay.
'excellent' becomes 'brava' (I've seen this before).
'case' becomes 'do' (I can't justify this - if you can you should believe this answer much more).
'brava'+'do'='BRAVADO'
'with' is the link.
Can you help me to learn more?
(Other definitions for bravado that I've seen before include "Vaunted courage" , "Bottle" , "showing off" , "Impressive boldness" , "Boastful courage" .)