Mournful or pitiable (6)
I believe the answer is:
tragic
This clue is a double definition.
'mournful' is the first definition.
(I've seen this before)
'pitiable' is the second definition.
(I've seen this before)
(Other definitions for tragic that I've seen before include "Extremely sad and distressing" , "Intensely sad and distressing" , "'Very, very sad (6)'" , "like King Lear" , "Terrible" .)