To the greatest possible degree (9)
I believe the answer is:
uttermost
(Other definitions for uttermost that I've seen before include "Maximum - extremity" , "Greatest possible extent" , "Last" , "Chief" , "The furthest point or degree" .)
I believe the answer is:
uttermost
(Other definitions for uttermost that I've seen before include "Maximum - extremity" , "Greatest possible extent" , "Last" , "Chief" , "The furthest point or degree" .)