Well-established journalist perching on low chair (4-6)
I believe the answer is:
deep-seated
'well-established' is the definition.
(I've seen this before)
'on low chair' is the wordplay.
'on' is a charade indicator (letters next to each other).
'low' becomes 'deep' (similar in meaning).
'chair' becomes 'seated' (I can't explain this - if you can you should give a lot more credence to this answer).
'deep'+'seated' is 'DEEP-SEATED'.
'journalist perching' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for deep-seated that I've seen before include "Firmly-established" , "Firmly fixed" .)