Crossword Genius

Spring on list produced by affluent type (8)

Ross

I believe the answer is:

welltodo

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'affluent type' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'spring on list produced by' is the wordplay.
'spring' becomes 'well' (both can mean a source of water).
'on list' becomes 'todo' (I can't explain this - if you can you should believe this answer much more).
'produced by' says to put letters next to each other.
'well'+'todo'='WELLTODO'

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I've seen this clue in The Irish Times.
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