Boasting (7)
I believe the answer is:
bravado
'boasting' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for bravado that I've seen before include "Boastful show" , "Boastful swagger" , "Showy boldness" , "Swag" , "Display of confidence or daring, often boastful and insincere" .)