Outright greed of sinecure disturbed English dons (9)

I believe the answer is:

esurience

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'outright greed' is the definition.
'esurience' can be an answer for 'greed' (I've seen this before). I am not certain of the 'outright' bit.

'sinecure disturbed english dons' is the wordplay.
'disturbed' indicates anagramming the letters.
'english' becomes 'e' (abbreviation).
'dons' is an insertion indicator.
'sinecure' with letters rearranged gives 'esurince'.
'esurince' enclosing 'e' is 'ESURIENCE'.

'of' acts as a link.

Can you help me to learn more?

(Another definition for esurience that I've seen is " Desperate greed of".)

I've seen this clue in The Independent.

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