Crossword Genius

At full throttle (3-3)

Ross

I believe the answer is:

all-out

'at full throttle' is the definition.
(thesaurus)

This is the entire clue.

(Other definitions for all-out that I've seen before include "Thorough-going" , "At full speed - no one at home" , "Exerting maximum effort - nobody home" , "Using every resource" , "Using full strength or energy - nobody home?" .)

I've seen this clue in the Universal.
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