Furnish flexibly? (6)

I believe the answer is:

supply

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'furnish' is the definition.
(I know that furnish can be written as supply)

I can't explain the remainder of the clue.

(Other definitions for supply that I've seen before include "Provide; flexibly" , "Furnish goods or services" , "Lay on" , "Provide or furnish with" , "Stock" .)

I've seen this clue in the Evening Standard.

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