Facetiously, ageing luvvie's first to go through lines (4)
I believe the answer is:
olde
'facetiously ageing luvvie's first' is the definition.
I know nothing about this answer so I can't judge whether this works.
'go through lines' is the wordplay.
'go' becomes 'l' (I can't justify this - if you can you should believe this answer much more).
'through' is an insertion indicator (I've seen this in other clues).
'lines' becomes 'ode' (I've seen this before).
'l' going into 'ode' is 'OLDE'.
'to' acts as a link.
Can you help me to learn more?
I've seen this clue in The Telegraph.
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