Not poorly - fit (4)

I believe the answer is:

well

This clue is a double definition.

'not poorly' is the first definition.
('well' is the opposite to 'poorly')

'fit' is the second definition.
('well' is associated in meaning with 'fit')

(Other definitions for well that I've seen before include "In a good way; spring" , "Water - thoroughly" , "Bore; very much" , "water is found here" , "indeed" .)

I've seen this clue in the Evening Standard.

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