Setter is possibly dilly-dallying about including this (4)

I believe the answer is:

lady

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'setter is possibly dilly-dallying about including this' is the definition.
The definition suggests a singular noun which matches the answer.

This is the entire clue.

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(Other definitions for lady that I've seen before include "mature woman" , "Lord's partner" , "Noble" , "Luck, for example" , "Title for a knight's wife" .)

I've seen this clue in The Irish Times.

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