Strut around with confidence (5)
I believe the answer is:
trust
'confidence' is the definition.
('trust' can be a synonym of 'confidence')
'strut around' is the wordplay.
'around' indicates anagramming the letters.
'strut' anagrammed gives 'TRUST'.
'with' is the link.
(Other definitions for trust that I've seen before include "commercial credit" , "Hope, expect" , "Fidelity" , "Confident expectation" , "'Put your . . . . . In God, and keep your powder dry'" .)