Generation not seen as representative (5)
I believe the answer is:
agent
'representative' is the definition.
(agent is a kind of representative)
'generation not' is the wordplay.
'generation' becomes 'age' (as in age group).
'not' becomes 'n't' (synonyms).
'age'+'nt'='AGENT'
'seen as' is the link.
(Other definitions for agent that I've seen before include "One acting on behalf of another" , "One representing others" , "Person who does business on behalf of another" , "Vehicle" , "Representative - means" .)