Possibly wake in an enfeebled condition (4)

I believe the answer is:

weak

I'm a little stuck... Click here to teach me more about this clue!

'in an enfeebled condition' is the definition.
I can't tell whether this defines the answer.

'possibly wake' is the wordplay.
'possibly' indicates anagramming the letters.
'wake' with letters rearranged gives 'WEAK'.

Can you help me to learn more?

(Other definitions for weak that I've seen before include "Faint; frail" , "Puny" , "Easily led" , "Feeble or frail" , "Spent" .)

I've seen this clue in the Evening Standard.

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