Broker a respectable man (5)

I believe the answer is:

agent

'broker' is the definition.
(synonyms)

'a respectable man' is the wordplay.
'respectable man' becomes 'gent' (gentleman).
'a'+'gent'='AGENT'

(Other definitions for agent that I've seen before include "factor in Scotland" , "Operative" , "Catalyst" , "Double-zero-seven, for example" , "Salesman" .)

I've seen this clue in The Times.

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