With respect to viewing (9)
I believe the answer is:
regarding
I believe this clue is a double definition.
'with respect to' is the first definition.
(synonyms)
'viewing' is the second definition.
('regard' can be a synonym of 'view')
(Other definitions for regarding that I've seen before include "Thinking" , "Concerned with" , "Concerning" , "Gazing" , "With respect to" .)