One sinking after bounding with confident gait (7)
I believe the answer is:
swagger
'confident gait' is the definition.
(I've seen this before)
'one sinking after bounding with' is the wordplay.
'one sinking after' becomes 'sagger' (I can't explain this - if you can you should believe this answer much more).
'bounding' means one lot of letters goes inside another.
'with' becomes 'w' (abbreviation).
'sagger' placed around 'w' is 'SWAGGER'.
Can you help me to learn more?
(Other definitions for swagger that I've seen before include "Arrogant gait" , "Walk arrogantly" , "confident gait" , "Blustering arrogance" , "Boast" .)