However, but (8)
I believe the answer is:
although
I believe this is a double definition.
'however' is the first definition.
(I've seen this before)
'but' is the second definition.
(I've seen this before)
(Other definitions for although that I've seen before include "Notwithstanding" , "Yet" , "Despite the fact that (8)" , "However, but" , "In spite of the fact that" .)