Dutch grub includes pies most feeble (9)

I believe the answer is:

droopiest

'most feeble' is the definition.

'dutch grub includes pies' is the wordplay.
'dutch' becomes 'd' (common abbreviation).
'grub' becomes 'root' (I've seen this in other clues).
'includes' is an insertion indicator.
'root' going around 'pies' is 'roopiest'.
'd'+'roopiest'='DROOPIEST'

I've seen this clue in The Everyman puzzle in The Observer.

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