Grieve (6)
'grieve' is the definition.
(I know that mourn is a more specific form of the action grieve)
This is all the clue.
(Other definitions for mourn that I've seen before include "Show sorrow for loss" , "'Miss'" , "Regret (a loss)" , "Weep for" , "Show sorrow at death" .)
'grieve' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sadden that I've seen before include "Make melancholy, depress" , "Cause to feel unhappy" , "Disappoint" , "Upset" , "get down" .)