Answer fellow representative (5)

I believe the answer is:

agent

'representative' is the definition.
(agent is a kind of representative)

'answer fellow' is the wordplay.
'answer' becomes 'a' (abbreviation eg in Q and A).
'fellow' becomes 'gent' (synonyms).
'a'+'gent'='AGENT'

(Other definitions for agent that I've seen before include "Delegate" , "who can act?" , "Actor" , "Vehicle" , "Dealer" .)

I've seen this clue in The Daily Express.

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