Wimp exploits work (7)

I believe the answer is:

milksop

'wimp' is the definition.
(I've seen this before)

'exploits work' is the wordplay.
'exploits' becomes 'milks' (milking is a kind of exploiting).
'work' becomes 'op' (abbreviation for opus).
'milks'+'op'='MILKSOP'

(Other definitions for milksop that I've seen before include "Weed" , "Wimpish fellow" , "Feeble youth" , "Cissy, fond of a pinta?" , "soft fellow" .)

I've seen this clue in The Independent.

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