Showing off nice socks? Arrogance! (9)
I believe the answer is:
cockiness
'arrogance' is the definition.
(I've seen this before)
'showing off nice socks?' is the wordplay.
'nice socks' can be anagrammed to 'COCKINESS'.
However, I'm unsure how this is indicated.
Can you help me to learn more?
(Other definitions for cockiness that I've seen before include "Arrogance" , "Swagger" .)