Crossword Genius

Using maximum effort (3-3)

Ross

I believe the answer is:

all-out

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

This is all the clue.

(Other definitions for all-out that I've seen before include "Whole-hearted (effort)" , "Using every effort - everybody exit" , "Nobody home, or using every possible speed" , "Using every resource" , "Using maximum energy - no one at home?" .)

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