Weaker beer elf brewed (7)

I believe the answer is:

feebler

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

'beer elf brewed' is the wordplay.
'brewed' is an anagram indicator.
'beer'+'elf'='beerelf'
'beerelf' with letters rearranged gives 'FEEBLER'.

(Another definition for feebler that I've seen is " Weaker".)

I've seen this clue in The Telegraph.

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