Result of splitting the bill at sea? (6)
I believe the answer is:
adrift
'at sea?' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
(Other definitions for adrift that I've seen before include "Floating uncontrolled" , "Unanchored - lost" , "No longer fixed in position" , "'Directionless, floating freely (6)'" , "not settled" .)