Crossword Genius

Using every effort to fault supply (4,3)

Ross

I believe the answer is:

flat out

'using every effort' is the definition.
(I've seen this before)

'to fault supply' is the wordplay.
'supply' is an anagram indicator (in a supple way).
'to'+'fault'='tofault'
'tofault' with letters rearranged gives 'FLAT OUT'.

(Other definitions for flat out that I've seen before include "Lying on floor" , "Bluntly" , "Using every effort" , "very quickly?" , "At top speed - totally exhausted" .)

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