Crossword Genius

Affluent association at the West End (3)

Ross

I believe the answer is:

fat

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'affluent' is the definition.
(thesaurus)

'association at the west end' is the wordplay.
'association at' becomes 'fa' (I can't justify this - if you can you should give a lot more credence to this answer).
'end' says to take the final letters.
The final letter of 'west' is 't'.
'fa'+'t'='FAT'

Can you help me to learn more?

(Other definitions for fat that I've seen before include "Cooking grease" , "Obese, having spare tyre etc" , "Adipose tissue" , "Substantial" , "Excess body weight" .)

I've seen this clue in the Evening Standard.
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