Parade lost trust (5)
I believe the answer is:
strut
'parade' is the definition.
(I've seen this before)
'lost trust' is the wordplay.
'lost' indicates an anagram.
'trust' anagrammed gives 'STRUT'.
(Other definitions for strut that I've seen before include "Walk arrogantly" , "Walk in pompous self-satisfied way" , "Take vain steps" , "Longitudinal brace" , "(Walk with) a stiff pompous gait" .)